Noob Question

[4_2_it]

I have read the FAQs and stickies and have monitored this forum for a couple of days. I apologize if this is more of the same old, same old for you guys.

My situation. I only have an account on Pokerstars right now. I mostly play NL $200 Hold em and am investigating signing up for a rakeback deal.

Why shouldn't I sign up with the affiliate that offers the biggest percentage? What am I missing here?

The biggest question I have is how to interpret all the percentages. Am I paid a percentage of the rake for each raked hand I contribute or is only for hands I win? Any other advice that is no contained in the FAQ would be welcome. You can PM me if needed.

Thanks.