[M.B.E.]

Interesting post. First, nothing wrong with your play. When you flop a flush, it is just so unlikely that someone else flopped a flush too. I remember one online tournament (I think it was a Pokerstars Sunday $500) where I limped with 98s in LP and flopped a flush (board was king-high). I doubled up on the hand, which was amazingly cool since it was the first of the tourney. My opponent called my all-in, after thinking long and hard, with KJ (top pair and a jack-high flush draw).

As for the player who flopped the queen-high flush, I would have raised but I don't know that smoothcalling is terrible. He's hoping that if no heart comes on the turn, the bettor (who may have a singleton A or K of hearts) will bet again, and then he can push all-in.