It's a number that I thought should be in about the right ballpark. The point wasn't to be on the mark, it was to be explicit enough about the estimate that wou

It's a number that I thought should be in about the right ballpark. The point wasn't to be on the mark, it was to be explicit enough about the estimate that would be easy for somebody to correct me if it was wrong. Which, it turns out, I was: looking around some more, it's closer to 1c per impression. That said, it's still easily in the ballpark of what would be a net positive.