[illegit]

I agree with Levarkin. I primarily play tournamnets and I find it extremely useful as well. You can use it to analyze your own play extensively if you choose or just track the play of your opponents which is the feature i find most useful. Knowing how often your opponents put money in the pot, how aggressive they are, how often they PF raise, etc. etc. is invaluable information. And also is a great tool to keep track of your wins/losses if you are lazy doing it on your own. This does it for you.