If nobody has raised and the betting comes round to you, and you have nothing at all, will you always call the small blind to see the flop when the blinds are low?

I do - and wonder if this is a leak in my game? I play purely single table SNG and am talking about calling an extra 8 chips to take my 7SB up to the 15SB. If anybody raises, i get out, but if nobody has raised (just folds/calls), currently I will always through the extra 8 chips in just to take a look at the flop. It rarely hits, but obviously when it does you can make a killing because nobody expects you to match what's on the board.

Thoughts....?