This was a dangerous slow-play. At a low-stakes table with no raises pre-flop, those other limpers could have anything. On the flop, you're definately ahead, (unless some idiot limped AA or KK.) but there are at least two possible draws to hands that beat you. We know about the flush draw, but anyone with QJ, JT, or QT also has a straight draw that could beat you. It's unlikely, someone could also have a higher pocket pair that yours, and is willing to pay .10 more to see the turn. Try to get more money in the pot when you know you're ahead, those draws are probably willing to pay you more.