Well as the title says....
...How many sites do you play on? that is how many do you really have any sort of bankroll or anything on. A while ago I heard someone say its good to have money on more than 1 site so you can switch between them all when youve had enough of one.
At the moment ive just switched my money to Bluesquare (Doylesroom) since I only have a very small bankroll ($20) but I will be putting money back into
Pokerstars eventually.
I only play on one at the moment.