Defending blinds and stealing blinds are two different animals. Don't defend your blinds. Why play a marginal, if not completely shit holding, to save 1/2 or 1BB. In NL when you get to the river, a lot of bets are +30BB, that's 15 orbits worth of blinds, in one street. Tighten up in the blinds, don't loosen up to win a BB, that's limit talk because most pots are 12 or 13BB. as for stealing blinds, I don't bother at $50NL and under, guys are too willing to stack of with shit hands, I'll get their money. Edges are unnecassary.