Anywhere to get all new posts, in latest first order. Regardless of forum.
Actually, I found it quite comfortable, instead of peeking into every forum and find some interesting questions to answer. Sometimes, I don't know where to approach to look for questions. There are places where I don't really belong or don't have those expertise, even then sometimes I manage to answer few questions quite reasonably. But finding those questions are difficult as I need to go into that forum and most of the time it turns out bootless.