Take a look at the "Whoring 101" link, it gives you some great sites and the best order in which to clear them in in order to maximize your bonus

Agree...whore whore whore. Also go to www.pokersourceonline.com and do some of their promotions...you get a deposit bonus PLUS what PSO offers. If you need $$ for the roll, choose to get PSO points then exchange them for $$ through Party (which you can withdraw after playing a few hands). If you go there, be sure to search the forums for upgrade codes - 9000 points instead of 6000 means $90 instead of $60.