Digg – what is left of it at least – has been acquired by Betaworks, a New York-based tech company that creates and invests in technology services. It is the last in a series of sales that have led to the dismantlement of the social media giant. In May the Washington Post paid $12 million to hire away 15 members of Digg staff (almost half of the overall team), while LinkedIn is believed to have spent around $4 million for Digg patents – including one for the “vote up a story” button that was one of the site’s trademarks.