Just a quick post to let developers with a penchant for speed writing know that Last.fm, the online music service, is holding a hack day on Sunday, 14 December in London. The challenge is to build an all-new Last.fm app using the site's open API -- you can see examples of existing apps, from mashups to plugins, at build.last.fm. (Full disclosure: Last.fm is owned by CBS Interactive, which is also ZDNet UK's parent company ... we bask in the reflected cool.)
There's a prize of £1,000 for the best app of the day, provided by Last.fm and partner CodePlex (Microsoft's open-source project hosting site). Runners-up get Xboxes.
It all gets started in East London at 10:30am, and the day will pack in the hacking, the judging, the awards and then a performance by a 'Top Secret Act'. To find out more, and to register, visit the Last.fm Hack Day site.