I screwed this one up bad.

[Grease]

The OP checked dark, thinking there was no chance he would continue.

That said, I'm torn between 3-betting and calling. If you call, you might keep a hand like AK in and not reopen the betting if you're against a straight, but if you 3-bet, you'll fold out everything except for hands that beat you (maybe except for KQ.)

If we were HU, I would 3-bet, but since we're in a multiway pot, I would just call and see what happens on the turn. Given the board structure, we really want a J or a 3, but anything other than an 9, A or a T (a T would be worse) is ok.