How NOT to buy a puppy

In Canada they have a program called Market Place where I
came across this video about puppy mill purchases.
http://www.cbc.ca/marketplace/episodes/2009-episodes/
how-not-to-buy-a-puppy
 In the USA, the new puppy mill sites are on the web. Very
few pet stores are left that sell cats or dogs in the USA. But
this video applies to how many animals (available on line
for sale) are actually raised. It's quite deplorable.
Increasingly, there are on line scams where you send the
money and no dog ever comes!
Hobby breeders raise their dogs in their homes. They don't
ship dogs to people sight unseen.  Blue Run dogs are placed
locally (Washington D.C. area) almost exclusively. A face to
face interview at my home is required and all family members
need to show up. If you find a breeder who will sell you a
puppy without interviewing you, you may be dealing with a
puppy mill or a "backyard breeder" who does no health testing
or follow up.
 I always tell impulse shoppers, "Buy in haste;
repent at leisure."  Waiting for a puppy from a good local
breeder is your best assurance of getting a healthy dog. Visit
the breeder and meet their dogs. See how their dogs are housed
and what kind of temperament the animals have. It is an expensive
and long term commitment. Do at least as much research as you
would do if you were buying a new car.