Now a days when google is hitting websites with its panda, penguin and spam updates. Search Engine Rankings are falling more towards how well reputed your website is on social sites, even though it do provide the big giants a step ahead of others as they are followed by a larger community yet its the last resort of SE’s after all the spamming webmasters have done through On Page and Off Page SEO techniques including link building, comment spamming, blah blah.
The proof of social importance of your website or blog can seen by the faster indexing of links shared on Google+ and on the other hand facebook, twitters are the all time favorites to generate traffic after hitting the publish button of your cms, although they do not participate much on the ranking side. In addition pintrest is a new social site where images can be pinned, and a few others are also in the list, though Dig is old and StumbleUpon is no more in business much.
I recently got rid of a long list of plugins I was having at my other blog since it was started, managed to removed a few them, embed functionalists of few in the theme itself and lastly I was left with the social icons. In a couple of minutes I managed to install the three, Google+, twitter and facebook on my blog without using any of my supper programming skills as it was a really simple job for any courageous person who can dare to mess with a few lines of human readable code.