Say you are making an artificial life form. As you get closer to 'human' your robot eventually enters a region called "The Uncanny Valley" where it suddenly become extremely repulsive. Ben Goldacre recently wrote in his miniblog that the maybe the same reasoning could be used to explain why nutritional therapists are more disgusting than really out there people like homeopaths.
I can't have been the the only one to think that The Awful Poo Lady manages to satisfy both cases? Especially after that daily mail article.
Sorry, I couldn't help myself. My apologies.