I tend the think the answer is no based on this article. There is so much noise with these search terms that I am having problems coming up with a definitive answer.
A:
According to wikipedia, sharepoint supports wikis out of the box. And there's an improved wiki for sharepoint on codeplex.
M4N
2009-04-05 18:49:48
They aren't wikis as they don't support markup. It says that quite clearly in the first paragraph of your wikipedia link. Thanks for the Codeplex link.
Nick
2009-04-23 09:17:43
+5
A:
SharePoint Wiki out of the box does not support 'full' standard wiki markup languages. (Most commonly the "[[page]]" markup is the only utilized wiki markup in SharePoint wikis). This is one of the foremost complaints with the SharePoint wiki.
Joshua
2009-04-05 18:57:10