[GiantBuddha]

My first thought was that folding the flop was nuts. My second thought was that EP would be nuts leading here with less than AK. My third thought is that MANY people seem to be confused as to what AF indicates.

AF is not a quantitative stat. It's a ratio of two quatities. The number of times the player was aggresive (bet/raise) over the number of times the player was passive (call). Notice that checking and folding are not included here. A high AF can come from lots of betting and raising (bluffing, light value betting, etc), or from lots of checking and folding (playing fit or fold). For instance, a set miner will have a high AF despite never bluffing because he's check/folding every flop he doesn't crush. When he hits, then he bets.

AF is a useful stat, but like anything else, only when it's properly interpreted, and mostly in conjunction with other stats (freq of flop bet, folds to c-bet, etc.).