does my early SB play influence BB's late decisions (how much)?

[Manque]

I've wondered the same thing. If it's early and folded to me in the small blind and I've got a marginal hand, I'll usually fold it. My thinking is that this probably happens so infrequently to the guy (at least at the lower limits) that he might actually notice and it would be the only opportunity to show him that you're playing tight.

The reason I would do this is so that I can push more later.