Poker tracker is awesome for self-evaluation. For one, I noticed that I hardly ever check/raised unless I had the goods. So yesterday, whenever I felt like someone was just buying the pot, I bluffed the ckeck/raise and took down a few pots with it. I’m also getting better at smelling the slowplay and have pretty much stopped playing shit hands like QJo.
I found this same exact leak using poker tracker, combined with looking at Fnord's hand histories. Check raising TPTK is a great play. I occasionally check raise straight and flush draws now also.