Ok, I\'ve seen a few posts that mention a few other posts about not using SP wikis because they suck.
Since we are looking at doing our wiki in SP, I n
Screwturn is wicked awesome - and it is C# / .Net.
Sharepoint 2010 is supposed to have better wiki features, and there is always the community kit of sharepoint. If you are able to leave the Sharepoint Wiki behind - you could always head over to the http://www.wikimatrix.org to find the wiki that works for you.