Every day, you will see someone complaining about the noise on FriendFeed. Typically, the user will talk about how they are going to trim the subscriptions. Contrary to what some people say, this is probably a good idea, not only on FriendFeed but everywhere there are social subscriptions. If you begin to get uncomfortable with the amount of work your network requires, then it is probably too large for your purposes. Many people will point to Robert Scoble and say he has thousands of connections, so why should they have less? You should have less connections specifically because you are not Robert Scoble. He is a special case when it comes to social media because of his amazing information processing skills, and his job is to use these sites and determine their usefulness.
For the rest of us, when it comes to your social network, size does not matter. It is how you use it. For example, on FriendFeed if you are complaining about the noise from various people, unsubscribe from them. Part of the power of a network are the friends of a friend. M