I'm a twitter addict. And as any real addict would do at this point - present to you yours humble twitter account. Follow at your own risk.
Anyway, this is why this graffiti made me smile. It's by a UK artist, Questionmarc, whose real name shall remain confidential...
The sad news is, as reported by a visitor of the artist's website, the wall has now been vandalized. The current wall could be seen here.