A wiki farm is a host for many wiki's. Sometimes
they are commercial and
charge a fee. An example is
http://www.editme.com/. I am looking for one
that hosts MediaWiki based Wikis.
I have a shared hosting website and have been unable to install MediaWiki on
it. I probably could install it on a dedicated host, but that would cost
$200/mo. Or I could buy a Linux based computer and use my DSL line. This
would be slow, and I could not provide 24/7 support to make sure the system
stayed up.
I don't know of a Mediawiki farm, but I don't see why a shared hosting
environment would not work. Maybe you can post the problem you had here
or the wikitech list.
There is a 4th option though besides shared hosting, dedicated hosting,
and using your DSL line. You can run your own "virtual" linux box for
around $20/month using User-Mode Linux (UML), but you'd need to know or
learn about linux system administration. See this page:
http://holton.ltc.vanderbilt.edu/wiki/UserModeLinux
I'm using UML hosting to move my wiki and set up other wikis too. I'm
hoping to switch to the MediaWiki engine if the memory & processor
requirements aren't too steep.
-Doug