I'm a Wikipedian since 2004, mostly active on Estonian Wikipedia, my home WP. I'm also an admin there, and was a board member of Wikimedia Eesti in 2011-14.
Due to the lay of Estonian history, some of my interests overlap with the German Wikipedia. Unfortunately, my German is less than shabby. So, if I write a note about factual problems on a discussion page, please correct the article, because I can't. (Or rather, I could, but you wouldn't like it.)
If you want to communicate with me, please send me a private message. I'll survive German, but you can also try Estonian, English or Russian.