Most comments I get are positive. I tell them that I am hardly every "not seen" any danger is usually intentional from drivers who are annoyed by my being on the road.

On a similar note, I've met three other cyclists, (two commuting, one working out), who all, somewhat accusingly, questioned my commuting on a certain road. They all said things equivalent to, "Isn't there a lot of traffic on Jupiter?"

I would expect this type of question from non-cyclists but was taken aback by it coming from other riders. The odd thing is that we were on roads just as busy if not busier when the inquiries came up. Go figure.