My experience with wikis is limited. I’ve set up a few of them and once edited part of a Wikipedia entry. Now, with Learn & Play, I’ve had the chance to use a pbwiki, one I hadn’t used before. I like it.
Which wiki?
I’ve found this to be handy in trying to decide which wiki product would be best for me. I’ve started several wikis using Wetpaint. I’ve found it to be user-friendly.