I haven't been on in weeks but knowing about this thread, I feel those that have not seen it with their own eyes might need some visuals.
Indiana Amish Puppy Mill on Yahoo! Video
AKC registration is so important if you are getting a pet and don't let them talk you out of it. AKC would see if the dam was being bred over and over again and their membership would be revoked and have to register with a registry that will take anyone.
We just had an occasion with birth defects after inbreeding. Now if the pedigree was offered for you to see, you would know if there was such a thing going on within this breeders home or kennel.
Nothing is perfect but AKC is by far the best registry along with the CKC (canadian kennel club)