Welcome aboard.
You get 1 star for every 1,000 posts, up to 33 of them.
The player moniker under your name is also based on post count. You start your way as a scrub, and eventually work your way up through all of the Celtics' retired numbers. Unfortunately, there's going to be a major shakeup of these soon, as Pierce and KG will be former Celtics. Vomit.
Tommy points are a way of rewarding fellow posts for good arguments, funny posts, etc. You can give one per hour.