[Air-L] wiki tool suggestions?

[catherine middleton]

Hi all,

I'm looking for suggestions for wiki software to use with a class. I 
don't want to have to install anything, and am of course looking for 
something simple to set up and use. When this question was asked some 
time ago, the following sites were suggested:

http://www.mediawiki.org
http://phpwiki.sourceforge.net/
http://moodle.org/
http://pbwiki.com/
http://www.seedwiki.com
http://www.pmwiki.org/

What would you recommend now?

Thanks,
Catherine Middleton