When you're beyond up to your eyeballs in data like Google is, all sorts of funny things happen when you're attempting to cross correlate data from widely disparate resources
To use a technical turn of a phrase - google is doing some way fancy s*** to churn through petabytes of data that I can't even begin to fathom. It's bound to make an oopsie every once in a while. The interesting part to me is how rare it actually is. I suspect their error rate is less than if humans were doing a similar classification and cross linking.
On the positive side of the fence - anyone remember how bad finding stuff on the web was before the google guys jumped in and made everyone up their game?
Also, I've been impressed with how fast google is indexing things these days. Sometimes I'll post something or be involved in something and it's available via google search within 4 hours. Mind boggingly fast.
Seriously. Sometimes, Google just blows my mind.
Between the ridiculous amount of data they somehow organize for all of us - to their many, many services. Just a couple days ago, myself and 7 other friends ranging from Canada, to Memphis, to KC, to California, to Mississippi were doing a group video conference, some of us from our smart phones. Trying to think of the software/hardware that is behind that makes my head hurt.