Wiki farms are a great way to get involved in a wiki community or start your own wiki. Wiki farms usually allow a single login access to multiple wikis, and often allow a global search across all hosted wikis.
The Alexa ranking given indicates how popular the website is compared to all other websites on the Internet with a ranking of 1 being the most popular website, 2 being the second most popular, etc.
12. @Wiki
Features: WYSIWYG editor, RSS support, Authorization control
Alexa Rank: 140,921 (12/21/07)
18. Wikihost
Features: Subdomain support, RSS support, Wiki export, private wikis
Alexa Rank: 235,159 (12/21/07)
19. ClearWiki
Features: WYSIWYG editor, RSS support, content ranking, subdomain support
Alexa Rank:278,094 (12/21/07)
