[chucky]

Interpreting flop betting without the context of preflop raising and position is difficult. That said, a difference between the tighter players and the others is probably that tighter players are much less likely to bet out their flush draws on the flop.

Ironically, I think that the bet/call/fold lines for draws can be mixed. Namely, superstrong draws (14+ nut outs) are usually bet. Medium draws (9-13 nut outs) are calls and weak draws (8 outs or less hu) are bet/fold (I don't mean that they should always be bet, but that calling with weak draws is a very risky proposition).