All social media sites are the best traffic sites,
Facebook
Twittr
Linked in

Best way to generate traffics are Web2.0, Q & A, Forum Submission, Social Media,Blog Posting

Reddit and quora.com these both are best site for gain organic traffic.

Off page process is the one of the best way to increase your traffic.

Go for Social media sites

Google+,Forum Commenting,Guest Blogging and Q&A

Social Media sites such as Facebook, twitter and LinkedIn, Bookmarking sites, Forum submission sites helps in increasing traffic

Social Media and social bookmarking is the best way for increase the website traffic.