I'll throw my hat into the ring.. I haven't played a PbP yet, but I am online basically 16 hours a day, so why not?
I've played D&D for a while (20+ years), and Eberron since it came out. No lack of knowledge here - I could probably stand to learn some!
Concept:
Name: Deregan Blackhammer
Deregan is a strapping young dwarf from the Mror Holds. He wields twin war-axes, almost in defiance of his family name. Hammers don't interest him much - his father always spouted the virtues of a blunt object, and how it would inflict the most pain upon a foe (in his father's case, normally an orc... "filthy creatures" as he put it - but give Deregan anyting opposing him or his friends). Deregan never believed that philosophy much. If you cut a leg off, the shock of pain would be almost too much to bear. If you merely crushed it, the opponent might have a chance to come crawling back to you. His motto is 'cut it, don't break it'; his mother called him simple and stupid, but there you go.
Deregan hired out his services during the last war - mostly towards the tag end of the conflict. House Deneith paid well, but the life of a mercenary - and taking orders from some know-it-all captain - just weren't for him. Too much of a free spirit, when the war ended, Deregan did some minor adventuring, and then decided to settle down. Recently, his demons have gotten the better of him. Alcohol mired him down in misery, to the point where it nearly destroyed him. Now, fighting his own inner demons, he has vacated his small home in Sharn, and decided once again to venture forth... Who knows, maybe he will find his demons, and conquer them. In the meantime, he strives to stay away from the drink, and tries to find enjoyment in other aspects. Perhaps by honing his abilities, he can master himself once more.
Roles: A fighter (working towards the tempest class perhaps). Not really a "tank", but more of a mobile devastation platform (MDP). A bit of a rebel (chaotic good), but a good natured, (former?) ale-drinking machine.