Thank you. Can you be more specific about what's wrong with my "method"?

I think you're too aggressive. I can't remember many examples besides the one I linked before, but when you enter a friendly conversation with a 'mini virtual protest' just because meat was mentioned, whether people agree with your opinions on the topic or not they are going to think less of you. Not just Kleinbl00, anyone who sees what you said. When people think less of you, they probably won't have as much of a open mind about what you say in the future plus the less mature will associate with the people who disagree with you based purely on how you interacted with them and defend their opinion before even thinking about it for themselves.

As a vegan how often to do engage in animal rights discussion? What methods do you use? I'm genuinely interested.

I only bring it up when I'm offered food or it becomes extremely relevant, generally when this happens the person(s) I'm speaking with already consider me a friend. Often they will curiously ask why I'm vegan at some point after learning I'm vegan, because they know it will be a friendly conversation and not a flame war. This way they're actually prepared to listen. I tell them what I think and not what I want them to think. I think people react a lot better when you're not telling them how to think. Here is a good example, Complexity Asked you about it and you responded with what you thought. It got a great reaction, you were even token'd. It was also relevant at the time.