Hi
I'd also like to briefly introduce myself, although not actively working on Wikidata or at Wikimedia Germany. I was in the board of the German chapter the first years and active especially in German Wikipedia - my main interest is topics in knowledge organization, library science, computer science, which I both studied in Berlin. Now I live in Göttingen (by the way that's were the first digital data transmission over wire took place in 1833), working on research and development for the GBV library union network. I hope to finish my PhD on foundations of data structuring this summer [1]. I sometimes write in my weblog at http://jakoblog.de/.
Cheers Jakob
[1] http://aboutdata.org/bibliography