You will find the list of the best Social networking sites herewith. It is up to you whether to use them or not but just for a knowledge, I will share them herewith. Some of them helps get social traffic to blogs.
Facebook
Google Plus
MySpace
LinkedIn
Bebo
Friendster
Hi5
Habbo
Ning
Classmates
Tagged
myYearbook
Meetup
MyLife
Flixter
