While not CAD related thought this post by Dare might be of interest. Have you noticed adverts showing up that relate to other sites and wondered how that happens?
How Facebook Knows What You Looked at on Amazon - www.25hoursaday.com
As part of my day job at Microsoft, I've begun to learn more about how advertising across the internet works on a technical level and it is quite interesting to learn how an image of a some head phones I looked at an e-commerce site ended up staring back at me from an ad on Facebook later that day…
