Adds a tell a friend, Share/Bookmark/Email/Social Bookmarking button.
Codecanyon plugins
Best (wordpress) plugins and scripts for your site!
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Themeforest wordpress
Best (wordpress) themes and templates for your site!
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jadedcoder Sticky Permalinks
Keeps a history of your permalinks no matter what changes you make on your site, and redirects old links to the new ones.
Digg Protector
The Digg Protector will protect your blog from suffering from the Digg effect.