In October, I wrote about using Yahoo Pipes to filter my FriendFeed. At the time I separated them by Twitter messages and everything else. Now that FriendFeed is becoming popular, my feed is big, so I've re-split my feed into friends and friends-of-friends. The RSS feed that comes from FriendFeed doesn't quite make it easy, so I filtered on the phrase class="friend nonf".
Now I can focus on reading what my friends have to say before finding out what their friends have to say.
Update: screen shots, as requested.
Fig 1. Friends.
The Friends filter blocks any entry with a title that contains 'class="friend nonf"'
Fig 2. Non-friends
The Non-Friends filter permits any entry with a title that contains 'class="friend nonf"'