Hola @youssef93, pues esto del Social Media por lo visto está contemplado dentro del SEO, según SEOmoz. Facebook, Twitter, Linkedin, G+.
"...Social account setup. Because social and SEO are coming together like never before, Google is showing plus ones and things that people share by default in the search engine rankings." http://www.seomoz.org/blog/an-seo-ch...teboard-friday