Its possible that the various search engines evaluate your ‘frequency of update’ in your social media and on your website, our advice is to post regularly with unique and relevant content that keeps your followers interested and makes them want to know more. Therefore good advice is to keep tweeting and face-booking and Google plusing and blogging 🙂 its all part of the rich web experience that will make your website visitor numbers and rankings improve.
If you havent heard of Google+ then you should know that its Google’s attempt at social media its a cross between facebook and twitter, we like it.