✔ 最佳答案
There is no point.
A couple of years ago, it made more sense. If you followed someone, and they followed you back, you could see each other's activity. But since Yahoo changed the format a year or so ago, if you allow ANY followers to see your activity, you have to allow ALL of them to see it. So, any Joe Schmo who decides to follow you can see your activity. I wish they would go back to the old way, it made a lot more sense.