A few more photos here. Will have to put together a collection of London street art shots soon.

A "mysterious artist" in Australia with his 'anti-road sign'. Brilliant. We need more (a few more).

A new, beautifully created and cheeky web idea. It's just that, er, maybe I'm stupid, but I've spent 10 minutes on the site and I don't exactly know what it is or how it works?