Oh, i'm understand. But my principe is collect followers as much as i can, there will be some followers is quality followers. And also, not all quality followers read and doing up what's written in our tweet.
For example, having 3000 followers and having 50 quality followers. I think the result will not too bad for 3000followers account, just said that the worst condition is only 2% of them become traffic : 3000x1% = 60 UV. And the worst condition for 50 quality followers is 40% : 50x40% = 20 UV.