Guido Fawkes is as on the ball as ever, reports the Independent, spotting an ill-judged in-joke on Ken Livingstone's "Your Ken" site that is supposed to encourage volunteers to sign up and support the former London mayor. On Tuesday the site ran a photo of volunteers in Islington, victorious after a recent by-election victory – but they were photographed outside Boris Johnson's family home, thus identifying it. It was promptly removed after Fawkes spotted it, but given that it was only visible to those who logged in with their Labour party membership details – how many people really saw it?