Importance of Poker Tracker????

[Mase31683]

I've been on quite a bit lately, and seem to notice a trend forming. When others give advice on a hand that contradicts mine, and I can't seem to understand why, it usually has to do with one player's poker tracker stats.

I don't use pokertracker currently, and I'm wondering how much this could be affecting my game. Is this a tool that I should absolutely have to play online poker? It seems like the first thing players take into consideration is the pt numbers rather than how the hand is playing out.