If you have a site but you don not have huge traffic and you want more money for making more money then SEO ( Search engine optimization ) is very important for your site to get more traffic and more money.You can get traffic from Social Media like Facebook,Twitter,Google+ and etc.If you have Huge Number of Audience on social media accounts otherwise you have to spent money for getting traffic.You have to Advertise your site or product on different social media platforms if you want to get traffic or sales.But we have another way to get traffic and sales and that way is SEO ( Search engine optimization ).SEO (search engine optimization) is totally free and very easy to implement on your site with which you can get huge traffic and sales and Automatically it will increase your earning.So You all are might thinking that what is SEO ( search engine optimization ).