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Difference between revisions of "Wikitravel:Why Wikitravel isn't GFDL"

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m (Reverted edit of 219.133.250.156, changed back to last version by Evan)
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*You can [[Wikitravel:dual licensing|dual license]] your work under both the by-sa and the GFDL. Note that this makes collaboration between Wikitravellers more difficult, and requires some attention by you to the stipulations of the GFDL.
 
*You can [[Wikitravel:dual licensing|dual license]] your work under both the by-sa and the GFDL. Note that this makes collaboration between Wikitravellers more difficult, and requires some attention by you to the stipulations of the GFDL.
 
*You can choose not to contribute to Wikitravel. We're sorry our goals don't align with yours, but we hope you can make a contribution somewhere else!
 
*You can choose not to contribute to Wikitravel. We're sorry our goals don't align with yours, but we hope you can make a contribution somewhere else!
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[http://www.shop263.com 化工]
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[http://www.shop263.com/downsoft/605.htm 呋喃甲醛]
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[http://www.shop263.com/downsoft/607.htm 呋喃树脂]
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[http://www.shop263.com/downsoft/608.htm 氟苯]
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[http://www.shop263.com/downsoft/615.htm 氟化铵]
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[http://www.shop263.com/downsoft/633.htm 磷酸二氢钾]
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[http://www.shop263.com/downsoft/634.htm 磷酸二氢铝]
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[http://www.shop263.com/downsoft/635.htm 磷酸二氢钠]
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[http://www.shop263.com/downsoft/636.htm 氯化铵]
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[http://www.shop263.com/downsoft/652.htm 氯化铝]
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[http://www.shop263.com/downsoft/656.htm 氯化钕]
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[http://www.shop263.com/downsoft/664.htm 氯化铷]
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[http://www.shop263.com/downsoft/665.htm 氯化铯]
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[http://www.shop263.com/downsoft/666.htm 氯化石蜡]
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[http://www.shop263.com/downsoft/667.htm 氯化铈]
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[http://www.shop263.com/downsoft/668.htm 氯化锶]
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[http://www.shop263.com/downsoft/672.htm 氯化亚铁]
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[http://www.shop263.com/downsoft/673.htm 氯化亚铁丙酰氯]
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[http://www.shop263.com/downsoft/674.htm 氯化亚铜]
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[http://www.shop263.com/downsoft/675.htm 氯化亚锡 ]
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[http://www.shop263.com/downsoft/676.htm 氯化铟]
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[http://www.shop263.com/downsoft/684.htm 氯酸盐]
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[http://www.shop263.com/downsoft/687.htm 洛克沙生]
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[http://www.shop263.com/downsoft/688.htm 马日夫盐]
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[http://www.shop263.com/downsoft/689.htm 吗啉]
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[http://www.shop263.com/downsoft/690.htm 芒硝]
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[http://www.shop263.com/downsoft/691.htm 芒硝碱]
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[http://www.shop263.com/downsoft/692.htm 美耐皿]
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[http://www.shop263.com/downsoft/695.htm 锰锭]
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[http://www.shop263.com/downsoft/696.htm 纳米]
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[http://www.shop263.com/downsoft/697.htm 纳米乳液]
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[http://www.shop263.com/downsoft/698.htm 纳米二氧化硅]
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[http://www.shop263.com/downsoft/699.htm 纳米二氧化钛]
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[http://www.shop263.com/downsoft/700.htm 纳米活性碳酸钙]
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[http://www.shop263.com/downsoft/701.htm 纳米氧化锆]
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[http://www.shop263.com/downsoft/702.htm 纳米氧化铁]
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[http://www.shop263.com/downsoft/703.htm 氖气]
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[http://www.shop263.com/downsoft/704.htm 耐火材料粘结剂]
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[http://www.shop263.com/downsoft/705.htm 萘甲醚]
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[http://www.shop263.com/downsoft/706.htm 萘乙酮]
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[http://www.shop263.com/downsoft/707.htm 尼泊金乙酯]
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[http://www.shop263.com/downsoft/708.htm 尿素]
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[http://www.shop263.com/downsoft/709.htm 镍盐]
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[http://www.shop263.com/downsoft/710.htm 柠檬黄]
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[http://www.shop263.com/downsoft/711.htm 柠檬酸钙]
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[http://www.shop263.com/downsoft/712.htm 柠檬酸盐]
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[http://www.shop263.com/downsoft/713.htm 农药]
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[http://www.shop263.com/downsoft/714.htm 钕铁硼磁体]
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[http://www.shop263.com/downsoft/715.htm 偶氮二异庚腈]
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[http://www.shop263.com/downsoft/716.htm 泡花碱]
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[http://www.shop263.com/downsoft/717.htm 硼酐]
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[http://www.shop263.com/downsoft/718.htm 硼硅酸铅]
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[http://www.shop263.com/downsoft/719.htm 硼氢化钾]
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[http://www.shop263.com/downsoft/720.htm 硼氢化钠]
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[http://www.shop263.com/downsoft/721.htm 硼砂]
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[http://www.shop263.com/downsoft/722.htm 硼酸]
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[http://www.shop263.com/downsoft/723.htm 硼酸锌]
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[http://www.shop263.com/downsoft/724.htm 膨润土]
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[http://www.shop263.com/downsoft/725.htm 膨胀蛭石]
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[http://www.shop263.com/downsoft/726.htm 砒霜]
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[http://www.shop263.com/downsoft/727.htm 片钙]
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[http://www.shop263.com/downsoft/728.htm 片碱]
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[http://www.shop263.com/downsoft/729.htm 偏钒酸铵]
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[http://www.shop263.com/downsoft/730.htm 偏硅酸钠]
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[http://www.shop263.com/downsoft/731.htm 偏硼酸钡]
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[http://www.shop263.com/downsoft/732.htm 偏锑酸钠]
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[http://www.shop263.com/downsoft/733.htm 漂粉精]
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[http://www.shop263.com/downsoft/734.htm 葡萄糖酸钠]
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[http://www.shop263.com/downsoft/735.htm 硅酸盐水泥]
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[http://www.shop263.com/downsoft/736.htm 普通硫化碱]
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[http://www.shop263.com/downsoft/737.htm 硫酸亚铁]
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[http://www.shop263.com/downsoft/738.htm 七钼酸铵]
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[http://www.shop263.com/downsoft/739.htm 七水硫酸镁]
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[http://www.shop263.com/downsoft/740.htm 气刨炭棒]
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[http://www.shop263.com/downsoft/741.htm 铅锭]
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[http://www.shop263.com/downsoft/742.htm 铅钙合金]
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[http://www.shop263.com/downsoft/743.htm 铅铬黄]
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[http://www.shop263.com/downsoft/744.htm 羟基硅油]
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[http://www.shop263.com/downsoft/745.htm 氢氟酸]
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[http://www.shop263.com/downsoft/746.htm 氢化钙]
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[http://www.shop263.com/downsoft/747.htm 氢化锂]
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[http://www.shop263.com/downsoft/748.htm 氢化铝锂]
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[http://www.shop263.com/downsoft/749.htm 氢化钠]
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[http://www.shop263.com/downsoft/750.htm 氢气]
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[http://www.shop263.com/downsoft/751.htm 氢溴酸]
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[http://www.shop263.com/downsoft/753.htm 氢氧化钙]
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[http://www.shop263.com/downsoft/754.htm 氢氧化铬]
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[http://www.shop263.com/downsoft/755.htm 氢氧化铝]
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[http://www.shop263.com/downsoft/756.htm 氢氧化镍]
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[http://www.shop263.com/downsoft/757.htm 氢氧化锶]
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[http://www.shop263.com/downsoft/758.htm 氢氧化锌]
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[http://www.shop263.com/downsoft/759.htm 氢氧化铟]
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[http://www.shop263.com/downsoft/760.htm 轻质碳酸]
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[http://www.shop263.com/downsoft/761.htm 轻质碳酸钙]
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[http://www.shop263.com/downsoft/762.htm 轻质氧化镁]
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[http://www.shop263.com/downsoft/763.htm 氰化锌]
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[http://www.shop263.com/downsoft/764.htm 氰化亚铜]
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[http://www.shop263.com/downsoft/765.htm 氰化银]
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[http://www.shop263.com/downsoft/766.htm 氰化银钾]
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[http://www.shop263.com/downsoft/767.htm 氰基乙醚]
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[http://www.shop263.com/downsoft/768.htm 氰基乙酯]
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[http://www.shop263.com/downsoft/769.htm 氰尿酸]
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[http://www.shop263.com/downsoft/770.htm 钨酸铅]
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[http://www.shop263.com/downsoft/771.htm 氰亚金酸钾]
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[http://www.shop263.com/downsoft/772.htm 氰乙酸乙酯]
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[http://www.shop263.com/downsoft/773.htm 曲酸]
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[http://www.shop263.com/downsoft/774.htm 全氟辛基磺酰氟]
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[http://www.shop263.com/downsoft/775.htm 溶解乙炔]
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[http://www.shop263.com/downsoft/776.htm 熔磷]
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[http://www.shop263.com/downsoft/777.htm 鞣铬剂]
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[http://www.shop263.com/downsoft/778.htm 肉碱]
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[http://www.shop263.com/downsoft/779.htm 乳化剂]
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[http://www.shop263.com/downsoft/780.htm 乳化碳酸钙]
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[http://www.shop263.com/downsoft/781.htm 乳酸]
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[http://www.shop263.com/downsoft/782.htm 三醋酸甘油酯]
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[http://www.shop263.com/downsoft/783.htm 三丁基氯化锡]
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[http://www.shop263.com/downsoft/784.htm 三氟化氮]
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[http://www.shop263.com/downsoft/785.htm 三氟化硼]
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[http://www.shop263.com/downsoft/786.htm 三氟化锑]
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[http://www.shop263.com/downsoft/787.htm 三甲苯]
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[http://www.shop263.com/downsoft/788.htm 塑料编织]
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[http://www.shop263.com/downsoft/789.htm 塑料编织袋]
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[http://www.shop263.com/downsoft/790.htm 塑料薄膜袋]
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[http://www.shop263.com/downsoft/791.htm 莹石粉]
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[http://www.shop263.com/downsoft/792.htm 硝酸钕]
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[http://www.shop263.com/downsoft/793.htm 酸式磷酸锰]
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[http://www.shop263.com/downsoft/794.htm 羧甲基纤维素钠]
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[http://www.shop263.com/downsoft/795.htm 钛白粉]
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[http://www.shop263.com/downsoft/796.htm 钛酸钡]
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[http://www.shop263.com/downsoft/797.htm 钛酸锶]
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[http://www.shop263.com/downsoft/798.htm 钛酸盐]
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Revision as of 07:03, 25 September 2004

Some open content Wiki sites use the GNU Free Documentation License for their work. For Wikitravel, this license doesn't meet our goals, so we've chosen a different one instead. This page tries to explain why.

The GFDL was developed to support making Free Content versions of software manuals, textbooks, and other large references. It has some heavy requirements for what you have to distribute with a document under the GFDL. For example, you have to include a copy of the GFDL, a changelog, as well as "transparent" (i.e. source) versions if you distribute over 100 copies.

These requirements aren't really all that onerous for large volumes of text. But for Wikitravel, we really want to have each article redistributable on its own. Wikitravel articles can be as small as 1-2 printed pages. For such small documents, it just doesn't make sense to require people to pass out another 10 pages of legalese text, as well as floppy disks or CDs full of Wiki markup.

Consider these small "publishers" who would distribute stacks of photocopied printouts of Wikitravel articles:

  • Local tourist offices
  • Hotels or guesthouses
  • Helpful travellers
  • Teachers
  • Exchange student programs
  • Wedding or event planners

Burdening these publishers with restrictions meant for software documentation or textbooks would mean that they'd either ignore our license -- a bad precedent to set -- or, more likely, just not use our work.

We make our content Free so we can collaborate on this wiki, but also because we want it to be seen and used. We can't serve travellers with useful information if they can't get to that information in the first place.

A lightweight alternative

The license we've chosen, the Creative Commons Attribution-ShareAlike 1.0, is much easier and more lightweight. We think that using the Attribution-ShareAlike 1.0 license (by-sa) meets our goal of having copyleft protection on Wikitravel content, without putting an excessive burden on small publishers. All that needs to be included are copyright notices, author attribution, and the URL of the license; this can be done in a short paragraph at the end of the article.

The big downside of not using the GFDL is that GFDL content -- like Wikipedia articles -- cannot be included in Wikitravel articles. This is a restriction of the GFDL -- you're not allowed to change the license for the content, unless you're the original copyright holder. This is kind of a pain for contributors, but we figured it was better to make it easy for users and distributors to comply with our license.

Creative Commons has plans to issue a new revision of their suite of licenses at some point in the future. Compatibility with other Free licenses is "a top priority", and we can expect that some time after that version change, articles created on Wikitravel can be distributed under the GFDL. (GFDL compatibility was supposed to be part of the 2.0 version change, but didn't make it in.)

If and when the CC licenses become GFDL compatible, other Free Content authors can include Wikitravel content into their work, even though we can't include GFDL work into Wikitravel.

Other options

If not having your contributions under the GFDL is unacceptable to you for some reason, and you can't wait the few months until the new version of the by-sa comes out that would be compatible with the GFDL, there are a couple of different options.

  • You can contact the Free Software Foundation (FSF), authors of the GFDL, and Creative Commons, authors of the by-sa license, and let them know that the fact that their licenses don't mix is causing you difficulty.
  • You can dual license your work under both the by-sa and the GFDL. Note that this makes collaboration between Wikitravellers more difficult, and requires some attention by you to the stipulations of the GFDL.
  • You can choose not to contribute to Wikitravel. We're sorry our goals don't align with yours, but we hope you can make a contribution somewhere else!

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