If  you are interested in monitoring how the snow is progressing across the UK Ben Marsh has compiled a Google-Twitter mashup to map tweets tagged with #uksnow. Twitter users have been using #uksnow for reports on the amount of snowfall and travel disruption that they encounter. If they also include the first part of their postcode and marks out of 10 for the amount of snowfall their tweet is automatically added to a Google map.  The site updates every minute.

#uksnow tweets 9.55 am 2nd February 2009