Facebook Like Box
Show your most recent posts and all your fans who like you on Facebook. Also, allow people who visit your site to like your Facebook Fan Page. Click the cog to add your Facebook page to the Like Box and select other features:
Facebook Like Button
Let your visitors like your page through Facebook and the link to your website will show up on their Facebook page! Simply drag and drop the add-on onto your page and you're done. Visitors must be logged into Facebook in order to use the button.
Google +1 Button
Let visitors +1 your page which will show up on their Google+ accounts as well as your Google search result.
Share This Site
Let visitors spread the word about your site by giving them the "Share This Site" button. By clicking the button, they can easily share your URL through whatever means they wish.
Share your Twitter Feed with your visitors by dragging and dropping it onto your site.