I had the incredibly good fortune to spend an hour with Ward Cunningham yesterday. Among other things, we discussed WikiWiki at length. In parting, he suggested I check out a newish wiki called travelwiki.org.
For avid armchair travelers and nostalgic backpackers like me, travelwiki has promise. I can't quite figure out their revenue model but then, I guess it doesn't take much to prop a site to the Web and run. Or does it? From a technology perspective, here are a few notables: