PC normally, phone when travelling but it annoys me a lot more.
@Turelus - EU PC Megaserver "Don't count on others for help. In the end each of us is in this alone. The survivors are those who know how to look out for themselves."
Even when I play on my PC I use the phone for the forum.
The only time I ever use it on PC is when I run into a problem in game and have to use google to find a way to solve it. (usally I end up in a thread that is over a year old about that problem, so it doesn't really count)