TECH CRUNCH -- June 25 -- Digg competitor Mixx just launched an extension to its groups feature that founder Chris McGill describes as "Ning for social media". Users can now set up Mixx community sites on their own subdomains. Administrators have the power to brand them visually, post editorial content, and even make some revenue off advertisements. Others can join as members and begin submitting items as they would regularly on Mixx. All submissions (stories, images, and videos) can be made just to a particular community, or to the Mixx site as a whole as well.

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