Share, Bookmark and Email WordPress Blogs:
Allow your visitors to Share your Blogs, Bookmark your Blogs, and Email your blogs to your friends with just one click online.
Download this plugin which will allow you sharing of wordpress blogs, email blogs, and posting your blogs to major bookmarking sites and more
Share, Bookmark, and Email Buttons for WordPress
You can also increase your site visibility in search engine and also increase traffic to your wordpress blogs.