GraphLab — alternative take on Map-Reduce, called Update-Sync, where tasks run on connected sets of nodes rather than on one node at a time.
Tower Bridge Closed — the @towerbridge account was a cute hack from Tom Armitage, whereby the public site for the London Tower Bridge was scraped and connected to Twitter, so you would see tweets like “I am closing after the MV Dixie has passed Upstream” and get a feel for the ambient activity in your city. Twitter turned over @towerbridge to the most tediously vomit-in-your-own-mouth-they’re-so-anodyne beige corporate tweets ever (account description: “Leading tourist attraction situated inside Tower Bridge”, sample tweet: “Looking for something to do it the City this weekend, check out http://www.visitthecity.co.uk/ and you’re always welcome at @TowerBridge”) and deleted the past history of tweets. Way to embrace the community of engaged passionate fans, guys! Welcome to Twitter, try not to step in your social media strategy as you cross the threshold–oh no, too late.