[Smasharoo]

Which leads to your second question. If the betting were to end on third street, then you might call with about anything. There are four more betting rounds, however, and you need to show down the best hand in order to win. You still need to start with decent cards.

Ok, so you're asserting that with marginal hands where I have, say, 10% equity, I should fold to the bring in bet when I'm getting > 11 to 1 to call?

I'm not sure I understand this. I freely admit I'm fairly ignorant of starting hand equities in stud, but is it really all that often that I'd be worse than the 16 to 1 odds I'm getting to call a bring in in last position?