IMO I really dont like your flop play there. From what I could gather the pot on the flop when it gets to you has like ~$10, and you raise it up to $3?? Those are great odds to call with whatever kind of hand they may be drawing with.......

Top pair here on a raggy board is very vulnerable, you got to come close to potting here I believe, and if they hang with you here, they more then likely have something that they like and you could feel more comfortable laying it down........

Well, thats what I think...who knows.

EDIT: Plus that turn bet looks weak to me, I would geuss he is betting his draw here most of the time.