WPSSO Social Sharing Buttons (WPSSO SSB) version 2.0.0 has been released. This latest version includes a new E-Mail sharing button, which has been requested a few times in the past. :) All CSS class names have been updated — WPSSO SSB version 2.0.0 will load a new set of default CSS styles. If you’ve customized the default styles in an older version, you will have to apply those changes to these new defaults as well (taking into consideration the new class names). The CSS editing features on the Sharing Styles page has been included in the Free version as well. ;-)
Plugins that add social sharing buttons should be fairly light and fast — they generally don’t need to fetch much information about a page, like an SEO or SMO / SSO plugin does. Here are some example “execution time” metrics from the P3 (Plugin Performance Profiler) plugin, using WP Test Data, and several popular social sharing plugins (along with the WordPress Core and Twenty Fourteen theme for reference). The plugins were configured to include the Facebook, Google+, Twitter, and Pinterest sharing buttons at the bottom of single posts and pages.