Obviously Facebook wants people to feel comfortable so that people will share as much as possible, even if it's within a closer circle. (Facebook is still recor

Obviously Facebook wants people to feel comfortable so that people will share as much as possible, even if it's within a closer circle. (Facebook is still recording everything about you, and might tap into more intimate info this way.) What might be less apparent is that this is a great way to make a news feed more relevant to people. By having posters self-select who sees what, it reduces noise and make's Facebook job easier for determining what content is displayed in the feed.