Lars Michta
Lars Michta voted up Franko Baldwin's answer

As said above, when you bookmark your website on FB, G+, twitter and so on, it will get indexed faster (supposedly).

If you listen to officials, social signals are not a ranking factor, or at least not directly.  But they do take a part of the algorithm in another way.

What do I mean? Every time you … Read more

Lars Michta
Lars Michta voted up Bradley Cooper's answer

The concept of Social Bookmarking is to get your site indexed faster and to "insure" yourself that your content will be indexed first by the Search Engine because if someone else "steals" it and get's it indexed before yours does your site might get penalized for duplicate content.

Also, social signals (i.e comments, shares, likes, … Read more