Is player stat tracking software commonplace?
I just finished reading "Winning Low-Limit hold em", outdated by 4 years. It mentioned pokertracker and other software that lets you see how passive/aggressive/tight/loose other players are (How many times they see flop etc.), but I feel like it'd have to be a lot more widespread by this point.
Does everyone playing $2+ limit holdem pretty much use it? Half? 25% of people?
I'm definitely downloading something because it's got to be really helpful, just want an idea of if others are using it or if it's against the rules in most poker sites