By not c-betting it raises ????s. Either you hit hard and are slow playing, missed the flop or are scared of the Q. I can respect not wanting to bet into two other players but I'd b/f to about 0.20ish, both for value against unpaired overs and to take down the dead money.
Seriously, what would your actions be if you had AQ, KQ, KK etc? - cbet.