SEO has always been an amazing part of the online marketing industry. And in the last years, social networks like Google+, Facebook or Twitter originated, having less or more influence on SEO. Google+ definitely has or will have a big influence on SEO. That's easy to understand, because Google+ comes directly from Google and Google for example is interested in generating independant social signals to enrich its search engine results. But Google also evaluates public data from Twitter and Faceboo [...]