I founded the MediaWiki consulting company WikiWorks, and the MediaWiki- and Semantic MediaWiki-based wiki hosting site Referata. I was formerly a significant contributor to the SMW Project. I've written over 15 MediaWiki extensions so far, some of them SMW extensions. My best-known extension is Page Forms. You can read more at my mediawiki.org user page.
I can be contacted at email@example.com.