Quality plugin, but I'd like to see it slightly less of a burden on page load. Pretty much, all social media share plugins that float on either side seem to slow page loads.
All of the sharing works well; the shares don't open new tabs/windows, and you can add an e-mail button if you follow the instructions.
Looking into ways to cut down on load times. Other than that, works fine on WP 3.5.1 and you don't have to be a genius to add the code and css as explained on the plugin page.
And it beats out Digg Digg because this appears on your homepage (if you want it to), and the e-mail option actually works.