I've started grabbing a bunch of additional site info in WikiApiary and recently put this query together that I thought people on this list might find interesting. It specifically looks at MediaWiki sites that are reporting a git-hash in site info and then shows what is being used most:
http://wikiapiary.com/wiki/MediaWiki_Git_versions Jamie Thingelstad jamie@thingelstad.com mobile: 612-810-3699 find me on AIM Twitter Facebook LinkedIn