Information about Yorkies (or perhaps Silky Terrriers) sought

When we were at the small shelter on Saturday, waiting for the woman in charge to get back into the office and give us information, a police officer came in with two stray dogs. One was a large breed, one of the ones some people find frightening, the other was a cute little thing. They had been running together -- both unneutered males with collars and no identification. We asked to hold it and we really liked it. Then they told us it was a Yorkie and I thought, "But I don't like Yorkies."

I realized I had never actually spent any time with them. I just have a mental picture of them as yappy and spoiled. The dog at the shelter was a bit larger than I thought Yorkies were, and just seemed friendly. It was sturdier than the little toy-like dogs I have periodically seen someone carrying around like a baby doll.

In any case, they let Brian put his name on it. That means that if the owner doesn't claim it in a week, Brian is first in line to adopt it, although they reserve the right to decide that someone else who puts their name on it is a better match. They also warned Brian that the chances of an owner not coming in to claim a Yorkie who was clearly well-groomed, if dirty, was next to nothing.

But I would like feedback about the breed from anyone who has experience with them. What was your experience? What do they need? What would you recommend to someone who was considering adopting one?