Some people say that if you Wiki, wiki. The internet will die... Here you go... Wiki - Wikipedia, the free encyclopedia That should explain all.
Basically, a prime example would be Wikipedia. Different people edit, modify and organize the articles, collaboratively.
I'm thinking of adding one to both of my sites, and maybe even on another small site I manage but I'm just not real sure yet
8D I plan to add wiki to my anime site in which users are able too post information about themselves and other members, moderated of course.
I pitched the idea of a wiki to the Nutella Forum staff, in hopes that it'll cover everything Nutella, and maybe food spreads in general. They are excellent ways to keep users on a site, though. The feeling of giving something relatively significant to the site besides forum posting will also tighten the community, if moderated correctly. And, less work for YOU, as the administrator.
I so want to; main reason: I want to list the Nutella 'competitors'. 8D Plus that "What is Nutella?" thread was just perfect, so it could be used as an intro on a wiki. ;D