I didnt read all the other responses. Short answer is that rakeback is pretty pointless at 2NL, better and longer answer is that rakeback is a great idea for any new site you sign up for, regardless of what level you play. For instance if you signed up at FTP you're going to get hardly anything in rakeback (although anything is better than nothing), however if you signed up for FTP without rakeback, then when you're playing 50nl+ you're going to be kicking yourself for not having gotten rakeback while you could (almost no site will give you rakeback unless you signup initially through a rakeback provider).