Yesterday saw the publication of an incredible letter by David Cameron to government departments, including local government. It sets out a whole range of areas where data is to be released – some of it scheduled for January 2011, but some of it straight away.

You can find my thoughts about the release in this article by Laura Oliver, along with those of the likes of David Higgerson. This is probably as important an event as the passing of the FOI Act – it is more important than the launch of data.gov.uk. Note it.