For my user page at meta, please see here
For my user page at the English Wikipedia, please see here.
Voor mijn gebruikerspagina op de Nederlandse Wikipedia, zie hier.
For my user page at Wikimedia Commons, please see here.
I have been an active contributor to the Dutch and English Wikipedias since March 2006. At both projects, my main activity is adding content to existing articles (mostly scientific subjects), yet I also do maintenance - at many different Wikimedia projects. I became an admin at wiki-nl in 2007 and served in their local arbcom in 2009.
I am a member of the Wikipedia quality task force.