I am an administrator in Hebrew and English Wikipedias and the Hebrew Wikisource. I also write in the Russian Wikipedia. I know Russian well, i learned a little Slavic linguistics in the University, and in my last visit to Prague i bought a dictionary and the 3-volume Mluvnice, so i can read Czech, but unfortunately i cannot write it. I plan to learn more Czech some time soon, so i would be able to read Čapek, Hašek and Kundera in the original.
I develop language support software in the Wikimedia Foundation, and as of 2015 my main project is ContentTranslation. This is my personal account, and my edits here don't represent the Wikimedia Foundation.