Whe you're planning a trip, you're sure to have questions, and for many, that means turning to friends books, travel agents and, of course, the Internet

The Web's got a wealth of tools, to be sure, and the offerings get more varied and interesting every day. Wiki technology, the collaborative authoring system behind popular reference sites such as Wikipedia, is now beginning to make its way into the online travel arena.

The appeal of wiki in this area is simple: Fellow travelers who've either visited the places you're thinking of traveling to -- or even people who currently live in those destinations - get a designated place to give you the inside scoop on where to go, what to avoid, what to see. The challenge for wikis, though, is getting enough user participation to make a Web user's visit worthwhile.

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