What trip said.

Besides it IS possible to bluff at lowlimit ring - you just have to pick your spots carefully. I normally only bluff with selective continuation bets on the flop and when I know my opp is on a busted draw on the river - someone who busted his draw on the river will almost never call a river bet unless he's a fool (some are, but not enough imo to make it unprofitable). Anyways, the key to bluffing is position, position and position.