As a new commuter (and not trying to sound like a newbie know-it-all), I concur with Treespeed and understand the frustration. As a motorist I didn't just jump in a car and start driving, I learned how to drive. As a bike commuter I hoped on this forum, asked questions from other commuters and got me some learn'n before I merged with traffic. I think respect of other road users is a prerequisite of a safe commute, whether or not that respect is returned is not the point, I can only control my own actions. I like the "guys you're doing it wrong", and the flier thing, I think that is not only helpful to new commuters but also constructive to your cause, if they flip you the bird and throw the flier back at you .....well....you at least did your part.