Here is Irene's thread about a breeder Registry
http://www.yorkietalk.com/forums/showthread.php?t=26110
Maybe a breeder could start a thread in this section with categories like
Years breeding Yorkies
Number of litters per year
Club affiliations
website
Breeding philosophies
Raised in the home or out
Not breeding under 4 or 5 lb females
Breeding for the standard or for another "looK"
Price range
Buyer Qualifications required
Contract or not
Health guarantee
Etc