i remember reading somewhere that 40% of all boards have 3-flushes (or better). so 37% sounds right.

now what are the odds that somebody was dealt 2 cards of the particular suit on the board? pretty low. and what are the odds that they played them to the flop? even lower (except at microstakes!).

so if you have two pair or even top pair on a 3 flush board, go ahead and bet it. assume your hand is good until proved otherwise (by a raise). you can make people fold by betting, but you can't by check-calling.

ChezJ