Mutual preference

Fun LiveJournal trick: go to the Manage Friends page and highlight all of your mutual followers (people that you follow that are also following you) in a certain color. That way, you can gloss over entries of people that don’t care about you enough to follow you, and pay more attention to those that do.

You could get complex and use multiple colors for different types of friends if you wanted to, but I’m keeping it simple for now.
(cross-posted at LiveJournal)