You earn points for every post you make, no matter which forum for you do so in. You also earn points for having other's respond to a thread you created. Also if your thread is rated well, you may earn more points.
Points can be spent at the Forum store for goodies such as:
Hotel Room - private forum
ability to attach a file to a post
Change your username
Change someone's Title
Buy an Image Sig
Donate points to other users
The store is located HERE
Bye the way, good to see you back KhaleeLah!
Good luck, and Happy posting!