Oh, I just posted it below.

Yes, do be polite. Make sure you check grammar and spelling like Koffee said. Be kind in the face of his anger, organize your letter in a well thought out manner, and remember, anyone who emails him is an ambassador from cycling to him.

I see all this bickering here over WAMU, NPR, the idea of an affiliate and then I remember why I sent my email straight to the man himself. I have no problem with any particular station regardless of whether or not I agree with their content, regardless of the public/private nature of the station.