Here is a thread that the owner of a sick puppy purchased from YorkieMatch.com posted in 2011. The breeder who is a member of YT posted to the thread as well starting @ post 30 in Dec 2012 which is very odd since the OP started the thread almost 2 years prior. Here is the owners YT name but it doesn't look like he's been on recently.
http://www.yorkietalk.com/forums/member.php?u=19209377
Additionally, there was a new post to that thread in 2013 (post #56) with another sick puppy
http://www.yorkietalk.com/forums/4258806-post56.html
and again post #68 AND another at post #71!