I'm new here, but not new to NL HE. It seems to me, and I realize this changes as the game gets bigger, but it seems to me that if they bet after you have shown aggression, then they have the goods. Therefore, once you bet the 3/4 pot on the flop and got raised u are in serious trouble. Sometimes, and it seems to be EXTREMELY rare, they are bluffing. I think they usually have the goods. I'm prolly to tight though......