[ElectricWaffles]

I think both the above comments are valid.

I'd CBet to lower the likelyhood of a bluff, though if they havn't got the ace often you'll get credited for it, so it kills any action you might have got from a lower overpair on an all low flop.

However I think effen has got a point too. At lower limits a check/fold is lower variance though you'll probably be losing out on value over many hands. The thing is does that matter so much when there is so many easy chips floating around anyway? Depends if you're willing to take the variance and pursue the best possible ptbb/100 I guess.