I have just seen this www.telegraph.co.uk/health/6951227/How-the-Magic-Sleep-Fairy-cured-my-babys-insomnia---and-saved-my- sanity.html where the sleep person in question claims to have many Mumsnet clients....which may or may not be true. But using the name like this makes it sound like an edorsement of her methods.
Admission: her methods are questionable and her goals are questionable, too. She may have helped some parents - irrelevant, actually.