Went through the initial setup last weekend. It automatically recognized 2k faces in I don't know how many pictures, a lot. She started tagging people and sometimes that number would drop by 30, sometimes by just the 1 she tagged. Didn't take too long. The real test will be when they upload some new photos, how many will it auto-recognize?
It's pretty cool because they've already come up with some completely new ideas for how to do their portfolios since the parents will get most of the photos in electronic format. They won't feel like the parents 'missed out' if they don't put a good but not amazing photo in the portfolio, so they can focus on the really good ones and put more of a story to it.
It recognized some dolls faces, pretty funny but kind of creepy too!