digg.com - web 2.0 - social bookmarking

http://digg.com –

Digg.com is one of the first sites to develop the social bookmarking concept online, and is one of the most popular web 2.0 sites. The site allows you to submit links to sites, articles, news, and information, to be voted upon or rated by the user community. This is a good place for SEO link submissions, if you are promoting your own site.

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