It was Yahoo, then facebook and now Google Buzz … every one wants to be twitter+facebook+mail+everything … they want to grab all our contacts and content … and force us to share with default settings, complex privacy controls, hard to follow “follows” etc.
The way Google Buzz automatically added friends and enabled public access to Picassa albums is shocking (facebook did the same when new privacy settings enabled public sharing by default)
Till dust settles down I have decided to Deny all access and lie low. Every one is now a social network.