Excellent letter. Regardless of how much impact it has, it's more than most other people can do. I've sent emails to BB, CC, and Crutchfield, but I highly doubt they will listen.

I also sent a more polite email to Partsexpress.com, because I like their store and could not do without it as they are the only people I'm aware of who sell Dayton Audio products. They did respond to me, in a very polite and honest manner, and basically said that as a small store they can't afford to lose their Monster-buying customers. They said that they have been keeping track of the issue, and that they are waiting for:
a) the larger media to pick up on it (they then linked me the inital article linked in this thread)
and b) for the undergroung movement to grow to a significant size.

So while they carry Monster, the fact that there's an alternative to the low end line of Monster stuff is encouraging.

A while ago I was also told about Kimber Kable. Supposedly it's very, very good. Far better than Monster. I don't have that kind of cash to spend on cables, though