Async Social Sharing is all about speeding up your website. Twitter, Facebook, Google+, LinkedIn, and Hacker News are supported. You can turn off the buttons that you don’t need. What this does is load these buttons after page loads for optimal performance. This means a slow script won’t stop your site from loading fast.
The Async Social Sharing Plugin is easy to deploy and improves your site’s performance. We would love to see more social buttons supported though.