[slipstream]

Follow-up: they were indeed gaming their own system, however, this was reportedly only for testing/educational purposes

http://news.ycombinator.com/item?id=1836318

http://about.digg.com/blog/info-site-changes-and-test-accoun...

http://ltgenpanda.tumblr.com/post/1413193597/in-response-to-...