[GrandmaStabone]

I am surprised at the concensus here. If I 3-bet the flop, the pot gets bloated, allowing the flush draw to call profitably on the turn. Specifically, I 3-bet, both call (correctly), I lead the turn, getting 2 callers (correctly) and hold up. In this instance the outcome is the same (in terms of pot size), but in my play, I eliminated the draw and won the same amount as I would have if I had allowed him to stay.
Additionally, as mentioned, the turn card will either make or break my equity in this pot. A blank here probably gives me about 20% extra equity (15% reduction from the flop to turn for the flush draw, and an estimated 5% from a card that did not appear to have helped the button). Therefore I am passing a small edge on the flop for a great edge on the turn, in a pot where I can protect my hand from a draw and collect extra bets from a second best top pair.