Re: Wiki Plugin for Main Blog where all BP users can contribute?
Getting MediaWiki running together with WP/BP has two main parts: 1) sharing user login info and 2) theming them to look alike. http://dev.commons.gc.cuny.edu/2009/05/21/new-mediawiki-extension-wpmusinglesignon/ gives a method for (1). As for (2), you’re looking at lots of elbow grease 
