"...for some categories". As revorad said, ugly ads definitely work for some categories but there's no real consensus why. What categories? Seems to be self-s

"...for some categories". As revorad said, ugly ads definitely work for some categories but there's no real consensus why. What categories? Seems to be self-service C2C sites (CL, PoF) and low-end consumer products (diets, affiliate stuff) in industries that feel amateurish/scammy at the best of times - so is the poor design a trust builder only when it feels like an individual has spent money on the design? Is there a point where this tips and poor design breaks trust rather than grows it? Will a web development company with terrible design convert better for some clients? Lawyers? Hospitals?