delicious.com and friendfeed.com are the best sites. they helped me to promote my adds

Facebook,Twitter,Google+

best sites
twitter.com
facebook.com
linkedin.com
pinterest.com
Google+
stumbleupon.com
delicious.com
reddit.com

Facebook, twitter are the two well known popular social networking online portals where anybody can generate good traffic for their site.

Pinterest, Tumblr, Instagram also

facebook is best

facebook.com
linkedin.com

Through social networking, people can use networks of online friends and group memberships to keep in touch with current friends, reconnect with old friends or create real–life friendships through similar interests or groups and you can try Google+, Twitter, Facebook

Thanks for this list!

Facebook, Twitter, Google+, LinkedIn, Pinterest are the best social networking sites.

Flockstation, arguably, is India’s 1st Comprehensive Community Exchange Digital Platform connecting millions of individuals with one another so that skills of individuals -hitherto unrealised- may be exchanged, tapped, and converted into cash for the individual; and connecting thousands of business entities to a bigger market for more efficient business.

the most common social sites are
facebook
twitter
google plus
instagram

I will choose Facebook, Linkedin