Ben Marsh has come up with a really neat use of Twitter. If it’s snowing in your area, tweet the first part of your postcode followed by a score out of 10 for density of snow. So the tweet “#uksnow CB3 0/10” indicates that it’s not currently snowing in my part of Cambridge.

Regularly-updated UK map here.

Lovely idea. It’ll probably be used by the railway companies to justify pre-emptive cancelling of trains, though.