Page for mutually-subscribed users

It would be really nice to separate the subscribers page into those you listen to, and those you don't. A similar separation on the subscriptions page - those who subscribe to you, and those that don't.

I can see this implemented either by having separate groupings on the subscriptions & subscriber pages, or by having a 3rd category in your statistics: "mutual" "two-way" or something catchier. In this scenario the pages would show mutually subscribed, people you subscribe to that don't follow you, & people who subscribe to you but you don't subscribe to.

Advantages: ease of maintaining your social network, noticing new subscribers w/o e-mail notification, easier to purge people you've subscribed to w/o guilt ;-), easier to gauge user's social style, potentially easier to spot spammers.