Self-styled as "the world's first open badges issuing twitter bot", Badgebot allows people to award badges and post the results using their Twitter account. I heard about it in today's ePIC conference. It "uses Twitter timelines and tweets as evidence, displayer of badges, and access to badges" and "saves all badge data as public gists" which you can view here. You can find code here and here. Here's the (short) list of badges. Here on Twitter I awarded myself a badge and here is the result.
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