Generally,There are mainly 3 sites facebook,twitter and Linkedin but there should be if you put Google+ as well,Its really good one for us

Social networking is a way to get connected with different users using social networking sites. There are various popular social networking sites as Facebook, google plus, twitter etc. They are nowadays also used for SEO purpose.

Google plus+

I actually think that Google+ is as good if not better than Facebook for a couple of reasons. First, Google gives an unfair advantage to Google+ in search rankings. So the more +1's you have on Google+, the faster your website will get to page 1 of search results. Second, Google+ was built for business while Facebook was built for personal use. So with Google+, you have the ability to share content on all of the most popular "Communities" whereas Facebook typically does not allow this. This can dramatically increase your exposure.

I think all the social networking websites are best.

Facebook is one of the best social networking site.

Facebook, Twitter, Google+ and Linked are best sites for business.

Facebook is still the best

which social networking site is best for business?

Ans:- Many Social Network Sites in Internet Connection For Increase Your Business. But Most Useful and Helpful is Facebook, Instagram, Google+, Pinterest, Twitter, Linkedin etc...

Facebook is best social networking site since it is know to many people.Facebook best option for Business marketing.People are addicted to facebook compared to other social networking sites.

1.Twitter
2.Myspace

Linkedin, Facebook, and twitter

Linkedin and google plus

LinkedIn is best Social site for business.

Facebook is best for connecting with people.