There is alot of discussion about this happening on a daily basis at the dogzonline forums. http://www.dolforums.com.au
The dol forums aren't just for pedigree dog owners/breeders, they are open to all dog lovers, trainers, soon to be owners, rescuers and anyone who just happens to love dogs.
If you are looking to add a four-legged member to your family and you are happy with a cross-breed as a loved pet, definitely look at rescue groups. They do a brilliant job socialising, temperament testing and homing dogs and cats. They often have puppies available also.
If you are wanting a particular breed, find an ETHICAL and registered breeder. Unfortunately not all registered breeders are ethical and some unscrupulous people do fall through the cracks. The best thing to do is contact breeders and talk to them and try and establish open communication. Google the breed you are interested in, find out what health issues they could have and might need to be tested for then you can ask the breeder all the necessary questions. NEVER buy an animal on impulse no matter how cute it is. I have waiting lists for puppies and I'm not breeding my girl for another 12 months or so as good things come to those who wait. These people are happy to wait as they know that at the end of it, they will have a dog that should be healthy, happy and have predicatable qualities and temperaments.
A decent breeder will be able to answer all questions and should be happy to mentor you and talk to you down the track no matter what your concerns are. They also have to abide by a code of ethics that is upheld by the ANKC (Australian National Kennel Council) so you have recourse against them if you feel you are being treated unethically.