I don't know but when I looked over my stats, the most profitable hands are the made hands that I bet on the river. I also found that in the small stake games if you check a river, it will most likely be checked down, especially if you c/c the flop and turn which puts a doubt in their heads about their TP hand. Now if you raised your opponent on either the flop or turn, the river is definatly checked down on the river.
So basically I think that you should just bet the hand that you have with a good intelligent bet and there is so many bad players in those stakes that you will get called with lesser hands. Slow playing at low stakes is suicide.