Have you ever boycotted a company or product? If so, what was it, and what caused you to boycott it?
I wouldn't go so far as to say I've "boycotted" companies, but I've avoided certain ones, especially purchasing at them, that's for sure. One example would be Wal-Mart, although that's easily avoided as that's more a suburban thing.
I will say I have boycotted goods based on place of origin. I won't buy anything made in Israel, except the occasional halva or sesame tahini, because that's actual Israeli stuff. I don't think I need to get into why I would boycott Israel.