modern music (artists from all over the world, music styles and genres, festivals & concerts, etc.)
natural sciences (mainly biology, (bio-)chemistry, many fields of medicine, etc.)
information technology (internet culture, computer technology, software engineering, etc.)
chat and IM software, technology and culture (I am a developer of Trillian and a former administrator of one of Germany's biggest chat communities, Spinchat)
filesharing, peer-to-peer technology as well as content protection systems and copyright issues
and a lot of other things ;-)
Please feel free to contact me about any language related requests, I am always happy to help translate texts if I find the time to.
I don't care much for filling or laying out my profile, so if you do, feel free to modify anything you wish!