"The DiggBar does not do a 301 redirect. If you shorten a page using DiggBar service, then Twitter the short URL you receive, any links that Google or other search engines find via that short URL will send credit to Digg, not to the destination page you shortened."

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The Growth Of Framebars & Kevin Rose On The DiggBar

  • a technical article that may give Diggo guidance on this issue of url shortening