Neal-

My dictionary defines boycott as "combine with others to abstain from buying, using, patronizing, etc (a business, a product, etc) as a means of coercing or intimidating."

Sounds to me exactly what you're doing. As I said in a past post, I don't think there's anyhting inherently negative in the word boycott. It's funny how some people object to a term that so exactly describes their actions.