Wow. If you use the internet a lot, you will find the latest story by Time Magazine's Joel Stein to be both thought-provoking and disturbing. He examines online privacy, and even looks at what data mining companies know about him. Some of it was false, but a lot of it was true.
A truly fascinating, must read piece. The very first sentence alone sounds the alarm bell. I read lots of posts daily. But nothing has captured my attention this year quite like this. I highly recommend you read it, and watch the two minute companion video.