Just got Buzz rolled out to my Gmail account. The first step was to pick who to follow, which feeds to connect to your account, and to check who follows you. From the 150+ people suggested to me to auto-follow I unchecked quite a few, for one thing, I don't want my public profile to show this social network (if I understood Google's wording right, then "people you follow" will show on your profile, and it must be public). I also unchecked family members.