Ten years of The Guardian on-line plotted in expletives - very illuminating!
MPs expenses by geographical location - a good example of information from the Guardian's databank, in a mashup with map and postcode data.
How cats can give us tips to be good corporate strategists - if you've got cats, you'll appreciate this.
How to turn your house lights off using Twitter - will appeal to the really geeky
Bakertweet - a way for bakers to tell the world that their bread has just come out of the oven
So who said Twitter wasn't useful?