Data mining is a process of gathering information about poker hands played by other players at the games in which player doesn’t participate personally. The gathering of the information in poker can be made with the help of such programs as Hold’em Manager and Poker Tracker, but usually specialized web sites (services) do the job. One could make a subscription on getting hands at the needed stakes.

Information is gathered for analysis and displaying at the time of play in set of numbers (HUD). Advantages of using data mining - you will be able to know the info about peculiarities of the opponents’ play before you start to play with them.

Data mining isn’t prohibited in most of the poker rooms but isn’t officially approved.