I'm so glad you've changed your mind about Yorkies, I use to be the same way. I'm glad you're still looking for the owner and you might have your vet do a scan for a microchip, many dogs have them. Here's an excellent article on what to do if you find a lost dog.
http://www.yorkietalk.com/forums/mis...ir-owners.html The main point is to always think "lost not stray."
You might be interested in this:
http://www.facebook.com/pages/Lost-a...31614370235246