Comes off as abrasive IMO. Someone might as well reply "I don't care that you don't care" then. You're more likely to get a good response from cutting all of that out and just leaving the meat: "I want to know about the current ROI for Twitter advertising, in standard marketing metrics."

The abrasiveness picks up in your replies. It comes off as if you went in looking for a fight. I don't know if you did or not, but the quality of the response reflects the attitude in which your question was posed. In my opinion.