poker stats programs?

these things that read hand histories? are they for real? are they safe? seems kind of cool to have something that gives you stats but i'm wary, you know.

poker tracker is awesome get it!

Poker tracker is an excellent database program to help you get better.

hmm

i heard of these ones too: pokeroffice.com, thepokerhound.com, and pokerprophecy.com

are they any good? better, worse than pokertracker.com?

Pokerprophecy is banned by some sites (well, by Party, dunno about anywhere else), never heard of pokerhound and heard good things about pokeroffice. But pokertracker owns.