you should be do work on facebook, twitter and google+ if you want to get more traffic on your websites.

facebook and google plus are best.

As per my experience

1) Twitter
2) Facebook
3) Google Plus
4) LinkedIn

well facebook is good for that. you can get huge traffic. twitter can also helpful.

facebook
 

facebook best network for drive traffice

Facebook , google plus and twitter...

Facebook, Google+, Instagram, and I've recently discovered Quora. Blogs like CopyBlogger and ProBlogger can help a lot, too.

Facebook , If photo pinterest and instagram.

I think

facebook, twitter and google+

Understand niche of your site and use social media to drive traffic to your blog. Join facebook groups in your site niche and it will drive huge amount of traffic to your blog.
You can also pinterest to drive traffic because its the best platform for marketing.

facebook is the best source

Facebook, Google+, Twitter, Pinterest, StumbleUpon, LinkedIn, Tumbler is the best source for creation more traffics.

I think facebook and pintrest is the best site for drive more traffic on your site.

Facebook, twitter, LinkedIn, Pinterest and Google plus all are the big player in drive social network traffic. I would recommend investing time and money there where you can easily target your customers that based on your product & services. Like if you sell ladies cosmetic items, then Facebook & pinterest will help you most.

Google+ and facebook comes to my mind on top.