I think most of you are confusing "boycott" with "I don't use it because I don't like it". Not eating a certain fast food because you don't like the way it tastes isn't a boycott. Neither is avoiding a game you don't enjoy playing, a drink you don't like to drink, or a clothesline you don't wear because it makes your butt look big.
THIS is why I don't boycott. People don't even understand its meaning anymore. It just becomes something cool to say to your friends because the word boycott sounds rebellious. IMHO, if you were REALLY boycotting something, you would try to spread knowledge about your cause. A boycott isn't effective if only 20 people do it. Corporations will only laugh at you.
That being said, I don't boycott anything. I chose not to buy organic because I believe the true purpose of "organic" methods has become lost amongst the fad. But I wouldn't call it anything close to a boycott...my friends still buy it, and I don't really care. I also don't buy Science Diet, Iams, or Eukaneuba dog food because there is MUCH cheaper and healthier food for your pets...especially when it comes to Science Diet, which basically has a monopoly on veterinarians. But again, not a boycott. Just a personal choice.
/end rant