Honestly, the way it is implemented on the swami blog is pretty old school. What you want is “sharethis” it is a much better implementation of social bookmarks on posts. The link is below.

I think you already have social bookmarking in your blog see the footer.

But that is from some other website. I assume you want to make it direct?

There are various methods to do that but none of them are sio simple so you need do some hard work.

Try this post it might help