Lopo Lencastre de Almeida

Automatically add links to your favorite social bookmarking site on your posts, pages and in your RSS feed. WordPress 2.6 or above and Sociable 3.4.1 or above is required, if you use an older version of those, please upgrade.
More info:
<ul>
<li>More info on <a href="http://yoast.com/wordpress/sociable/" rel="nofollow ugc">Sociable</a>, with info on how to add sites to it, and how to integrate it into your WordPress in other ways.</li>
<li>Check out the other <a href="https://wordpress.org/extend/plugins/profile/ipublicis" rel="ugc">WordPress plugins</a> by the same author.</li>
<li>Also at <a href="http://box.net/iPublicis4Wordpress" rel="nofollow ugc">iPublicis4Wordpress</a>.</li>
</ul>

DoMelhor for Sociable

Automatically add links on your posts, pages and RSS feed to your favorite social bookmarking sites. Requires Sociable 3.4.1 or above.

bizsugar

BizSugar.com is a social sharing and bookmarking site for entrepreneurs and small businesses. The BizSugar community is passionate about sharing the freshest, most pertinent content about marketing, finance, franchising, global business environments, legal topics, management, startup tips, and technology.
Add a BizSugar voting button to your website to encourage readers to share your content with the rest of the BizSugar community. Visitors to your site can submit your posts to BizSugar, or vote on your story if it has already been submitted. The button automatically updates the vote count on the BizSugar.com site.
This plugin gives you customization options for where to place the button in your posts and offers 4 different styles/sizes of voting buttons. This plugin has been updated and tested for recent versions of WordPress.

BizSugar.com Vote Button

Add a BizSugar voting button to your website to encourage readers to share your content with the rest of the BizSugar community.

DoMelhor for Sociable vs BizSugar.com Vote Button