I'm a big believer in boycotts. In fact most of us do it all the time, although sometimes subconsciously, and have been all our lives.
When flipping channels I'll blow right by Conan O'Brien because he's a jerk. I ended my years long subscription to BusinessWeek because they turned ultra liberal after Bloomberg bought them out. The last truck I bought was a Ford because they are an American company that didn't take a government handout.
I'm not out marching in front of Target or Nordstrom's with my hand made sign. And I'm not making death threats to the CEO of Whole Foods because he took up Obama on his offer to accept all suggestions on health care reform.
I simply do the things I enjoy, buy from companies I like and not from companies I don't like, and go on my merry way. Just like most people do.