When it comes to what shows up on the SERP, Google scours the actual sites, but it finds the sites through links. Even sites linked to by many social networking platforms. So, I think while SEO content is the steak you put on the plate (one’s site), Social networking is a type of steak knife that allows Googlebot and users to find the site.

Of course, web masters can always go on a link campaign, and those are more authoritative than social networking; though social networking (i.e. microblogging and social bookmarking) does let search engines know you’re making an effort. The point is that having great SEO content without letting people or search engines know it’s there is like having great steak without a steak knife.

Erick
http://www.seobridges.com
(editing helps, too)

This post was mentioned on Friendfeed by Mustafa Duran: “Advantages of Social Media; * Your Word Goes Viral (Twitter , Facebook , Reddit , Digg , StumbleUpon etc) * Traffic starts coming to your site at the moment you tweet, post an update, submit it …