The other day I was at the library and was looking for a book. Right on my way out, I saw something that caught my eye. It was a book called Blink by Malcolm Gladwell.
I logged into Amazon the next day and at the top they normally recommend you books based on what you bought there. I don't have a huge buying history from Amazon, and most of the stuff I have bought there has been for other people. But right there was there recommendation for that very same book. I was very impressed and decided to give Amazon its due.