Wikitravel:Cooperating with Wikipedia
Wikipedia is a wiki-based encyclopedia project started in 2001.
There's a lot of indebtedness from Wikitravel to Wikipedia:
Note, however, that Wikitravel is not a Wikimedia project.
We have a special Welcome, Wikipedians page to introduce our project to people familiar with Wikipedia.
Wikipedia and Wikitravel have compatible licensing, and it is technically possible to share content between the two provided the license requirements are followed; in general this entails providing attribution indicating the source from which the content was taken using the Wikipedia attribution template.
However, think carefully before doing this, and discuss it with others. Wikipedia and Wikitravel have distinct goals, and forking large amounts of content from one project to the other creates wasteful duplication, and can actually stifle the development of creative, original content. In most cases, linking from one to the other would be a better choice.
As a rule, any significant copy-pasting of Wikipedia text to Wikitravel is not permitted, while borrowing the odd single turn of phrase when your writers' brain is stalling is allowed.
Linking to Wikipedia allows people to access encyclopedic information that doesn't fit into the framework of a travel guide. For example, the entry on the United Kingdom should have a thumbnail sketch of the country's history, but detailed information on Henry VIII is inappropriate. A link to Wikipedia's UK article would allow readers to find non-travel related information about their destination of choice, without stretching Wikitravel beyond recognition into an "everything you need to know about everything" guide.
If there's a page on Wikipedia that covers the exact same subject as a page on Wikitravel, but from an encyclopedic rather than travel guide point of view, consider making a twin link to the page. And if you link to Wikipedia, it's also nice to link back from Wikipedia to Wikitravel as well. See links to and from Wikipedia for how to do this.
However, don't use links as an excuse to be lazy. Wikitravel entries should be useful and self-contained; links should provide additional information. Writing "Everything you need to know about France is here, except that there's a good bagel place in Lyon" is not helpful.
There are always various projects in the works at Wikipedia, similiar to Wikitravel's concept of Expeditions. Some of these could be used by both Wikipedia and Wikitravel. See, for example, the work being done on maps.
All Wikimedia wikis use the same software as Wikitravel. The software is called MediaWiki, and it's Free Software under the GNU General Public License (GPL). It's written in PHP, and uses the MySQL database engine to store page and user information. It was originally created by Wikipedia developers, but it's now used for a number of other projects (see sites using MediaWiki for a list).
Helping out with the MediaWiki software means that Wikitravel works better. It also shows that we're grateful for this great software, and that we want to give something back to the people who worked so hard to make it. It builds up goodwill, since anything we do for MediaWiki will help users for all the sites using MediaWiki.
Some things to do to help with MediaWiki: