Sen. Boxer eventually replied to the first one (months later, after the issue had resolved) with a form letter telling me of her support for the broadcast flag. It was obvious that my initial letter had no impact whatsoever in her reply - just a total form letter. As yet I have received no response to my October 5 letter, over a month later. I'm not terribly surprised by Sen. Boxer's support - her third largest industry supporter is TV/Movies/Music[opensecrets.org].
In contrast Rep. Lofgren replied within a week, with a letter that was obviously still form, but at least somebody edited it slightly to refer to the reason I sent my original missive. I know how she stands on the broadcast flag and more importantly I know that she has somebody in her organization that looked at the input her constituent (me) sent her.
Wanna guess who is more likely to get my vote next time? I sincerely hope somebody in 2010 runs against Boxer that doesn't come up with even more vile positions to take, because I don't like her stance, and I don't like how she responds to her own voters.
(Speaking of voting I've got to go read up on a kazillion squirrely propositions today. Sometimes being a Californian is a real pain in the rear.)