Poker TableRatings have a new page that shows average rake paid; http://www.pokertableratings.com/poker-rake-analysis/no-limit-hold%27em
Obviously the sites that offer rakeback will have higher Rake, but for nanostakes (NL10 and less) even with Rakeback Full Tilt was really bad compared to Pokerstars or Party Poker. Guess I’ve just moved my roll to the wrong site.
I suspect if I move up to NL50 I might lose more than just rake though…
