To use your phrasing, you are filtering people in. When you make an access list in DW it is an inclusive list of people you want to share a specific post. Suppose I made a list with you and nattalie on it, and wrote a post with that access list. *Only* you and her would be able to read it. Not my subscribers and not the people I have granted access to.

That being said, you have to have subscribed mutually to a person to add them to an access list. Want to be friends? I am interested in these stories you speak of...