I prefer usually challenging questions, while I may spend some time on easier ones trying to explain something that used to be difficult for me.
My preference goes to algorithms, and C, a language that I've liked and known for a long time, while I like also to visit server fault and its many interesting and challenging system, DB, nginx, ... questions and answers.
Linux has been my working environment for almost 10 years. And a (few) Mac for leisure.
- Tumbleweed oct 16 '10 Awarded for SO: adding comments with iPhone is a slow process
- Promoter sep 15 '10 Awarded for Aren't you annoyed when you're down-voted while chosen as best answer?
- Revival nov 2 '10 Awarded for Add the number of (upvoted) answers to questions listed in the related section