DJasonpenny, I'm not sure if it's drivers' attitudes changing or if it's just that people are noticing and posting about positive actions.
It also might be a product of where people are riding-- I'm down here in Tigard (I'm lucky enough to live and work in the same city-sorta- with a 5+ mile commute), and I really haven't had many problems with the drivers here.
Although, with gas prices so crazy and everyone looking for relief, I like to think that the drivers are seeing us cyclists in a new perspective-- as the smart ones!
I like to point out positive things to people; this site tends to get so negative when it comes to motorized road users, and that doesn't help the non-motorized revolution. No one likes a smear campaign.