I've just discovered the most awesome browser game ever, my search is over! It's called Forum Warz and it roughly mimics the life we all have going across the internet. I won't spoil anything, but it has the ability to grab you right from the beginning and never let go.
There are several classes to choose from, let's just say I picked the "Troll" class. Even the interface is different depending on each class! Go right there and just let the fun start! (be careful that there are obsenities, just like the internet)
www.forumwarz.com
DO IT
(also a close second for amazing browsing games is Heroes of Ardania)