I see a bluff raise on the flop at the PP NL200 tables way more than at the PP NL100 tables. It works very well too. I've found the worst thing to do is call. For me, it's almost always either a fold or reraise decision. Before it was almost always a fold. But I've actually found that reraising wins a lot of pots right there. For example, if I raised preflop and there is $15 in the pot, and I come out for $10 on the flop. Then get raised to $20. For some reason people who are bluffing usually go for the minimum raise. At this point if I believe them, I fold. But more recently if it feels like a bluff, I'll reraise to $35-40. I've done this with nothing but Ace high if I read the guy for a bluff here. I've been very suprised how many times they lay it down here. This is just on the flop though, I give people more credit for a real hand when they do this on the turn.