I am mainly active on https://commons.wikimedia.org where I create mostly educational videos and on http://en.wikiversity.org where I create courses. As you can see from these activities I am active in the movement of open educational resources (I am member of the Buendnis Freie Bildung)

I am fighting for open access (http://rigourandopenness.org also see the following blog articles: [1] and [2])

Besides that I am doing a PhD in natural language processing and language modelling.