Social Bookmarking sites traffic source for bloggers. You can get a huge traffic from social bookmarking. Here are some Social book marking plugins for wordpress

1. Social Bookmarking Reloaded

The Social Bookmarking RELOADED plugin for WordPress adds a list of XHTML compliant graphic links at the end of your posts and/or pages that allow your visitors to easily submit them in a number of social bookmarking sites. Furthermore, the plugin adds a page in the WordPress admin section that lets you customize it

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