On: Wikipedia deletes entry on PBWiki, the biggest hosted competitor with 550,000 wikis

for what it's worth here's a wiki page comparing various wiki software and most of the other companies have pages.

http://en.wikipedia.org/wiki/Comparison_of_wiki_software

the magic of wikipedia is of course that david weekly can get an intern to put back the page.

But David Weekly is honorable and tries to minimize self-interested editing and surreptitious sock-puppeting. ;)

I was going to point out that link, but I discovered one specific to wiki farms that isn't the same, but still has some very obscure wiki farms with articles on wikipedia.

On that particular comparison page of all the software, it does stick out like a sore thumb though..