DZVO

This plugin allows you to display a buttons which shows the voting for a social news message (digg,sphinn …) on your blog post. 
You will find a collection of voting buttons for different social-news-services <a href="http://www.zauberpage.de/vote-it-liste.html" rel="nofollow ugc">here</a>.

Vote It!

Vote It! Buttons for Blogpostings. Set very simple a digg, sphinn or another social-news-button in your blogpost.

insivia

Providing the ability to manage how social media sites see your blog or website. Manage your facebook sharing image, update twitter status for multiple accounts and view your digg submissions. Also can post your new blogs to multiple twitter accounts when you publish a new post. More coming soon.
<a href="http://www.insivia.com/wordpress-social-media-manager" rel="nofollow ugc">Social Media Manager</a> built by <a href="http://www.insivia.com" rel="nofollow ugc">Insivia Marketing & Interactive Web Design</a>

Social Media Manager

Providing the ability to manage how social media sites see your blog or website. Manage your facebook sharing image, update twitter status for multipl …

Vote It! vs Social Media Manager