I play $0.15/$0.25 NL and PL, $25 max buy-in.

As calling the SB is only $0.10, I often call the SB, even with junk. If there are ANY raises before the flop I will fold with a junk hand. If everyone else is only calling the BB, it seems worthwhile calling, even if I have rubbish, just on the off chance of catching the winner.

Any thoughts on this, or am I just wasting money (a small amount admittedly)?