When would you block someone on Yahoo! Answers?

I block people and have no problem admitting it. For one reason only: based on their posts or mainly their answers, I DO NOT want their advice, answer, opinion or fact. I found them either ignorant, arrogant, or just plain rude. If you want to be that type of person on here that is fine, but you will not answer my questions because, frankly, I don't want to hear what you have to say.