At the end of the year, whatever points you have, Nitemare and Amish will redeem for cash. So make sure you post as much as you can and get as many as you can.
Actually, the points you get can be used in the Store, which is accessable through a link at the top of the page. Follow the link and you can see what they can be used for.
you get 15 points for every thread you start, and points every time someone replies to it. This reply earns you points. You should thank me.