How Do I Redeem My Reward Points?

The points don't work like that. They are used in the rank that you earn on here, you get points for answering questions, leaving ratings, inviting friends to the site, stuff like that, when you reach a certain amount of points, you will level up so to speak to the next level of blurter. I am an uber blurter, and this is the highest that you can get to for now, but that doesn't mean that you stop making the points.
Scroll to the bottom of the page, and click on "help", and in there click on "points and levels" and this should tell you more about how they work. Hope this helps.

Points are just used for rank