Other sites that would likely be of interest to travelers. (Perhaps rock climbing wiki, sports wiki, map wiki, travel law, etc.,.)
Wiki tht probably shouldn't be linked as neighbors:
the Symbol Project wiki - very tangential, very fringe - if you're going to do something like this, it would probably be Wiki Travel linking to a Maps wiki linking to a Public Symbols wiki linking to the Symbol Project
consumerium - one day, people interested in learning about travel will want to visit consumerium, but that day isn't today - what would be better, would be a "global shopper wiki," for people who like to buy things around the globe, and then link both Wiki Travel and consumerium to THAT wiki
visual wiki - same reason as symbol project wiki
Wikipedia, Switch wiki, book reviews - these should be linked from the wiki nodes wiki; We can't be putting all these universally applicable wiki on every single wiki node in the world; there will be more and more useful utility wiki; no point in listing them all everywhere
We have two problems right now:
Foreign languge wiki: We don't know foreign languages, so we can't write wikinodes very well for them.
Non-existant wiki: While you'd like to link to say, a wiki about maps, from the travel wiki, or travel law, you can't realisticly do it, because those wiki don't exist yet.