I'm a computer science PhD student at the image and signal processing group at the university of Leipzig.
I've formerly been active on Hackquest.
...and had some fun on TopCoder.
and nowadays you will find me on SO answering questions about WPF.
Q&A for professional and enthusiast programmers
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Q&A for people studying math at any level and professionals in related fields
Q&A for professional programmers interested in conceptual questions about software development
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for computer enthusiasts and power users
Q&A for self-employed and freelance workers
Q&A for enthusiasts and power users of Windows Phone OS
Q&A for peer programmer code reviews
Q&A for scientists using computers to solve scientific problems