Poker Tracker

Poker Tracker... well where do I start? I originally heard about it not long after I started playing online poker and thought it looked too complicated (kicking myself now that I waited so long). I have only been using it for 2 days now, but I am hooked!

A couple clicks and instantly I know that the hand I have lost the most money with is ATo - note to self: watch yourself playing ATo and KJo

Whether you want to know more about your opponents or your own playing (or both!) give poker tracker a try, its $55 (there is a free demo also). There are 2 things I recommend you read

Poker Tracker Guide - an ebook that costs $20 and is well worth it.
Bet On Poker website has several articles on using poker tracker.