[I.Rowboat]

Just another voice agreeing with the majority of previous posters: get as much money into this pot as possible on every street. My own opinion is that in LHE, you make your money on the turn, so jam it up. As Captain R says, maybe the SB has big clubs and is tied to the pot, or he has AA or KK and wants to see the river. Just keep charging them to draw dead, or to try and hit their 1 or 2 outers.

Another thing to keep in mind in these situations is that by merely calling on the flop/turn it looks like you are probably on a draw, and your call may inadvertently kill further action if the river completes a draw. Wouldn't that suck: the river comes a club, it's checked to you, you bet your boat, and both players fold, incorrectly putting you on a flush, whereas one or both would have called a turn raise.