Here is a small selection of videos and articles to give you an overview on the subjects of big data, data mining and privacy concerns. I highly recommend watching the first two at least, they are short and succinct and very informative.
Dr. Jennifer Golbeck, director of computer-human interaction at the University of Maryland The Curly Fry Conundrum
60 minutes broadcast on The Data Brokers 60 minutes report on the Data Brokers
How the NSA can turn on your cell phone remotely NSA turning on your phone
Facebook microphone app The Facebook microphone app
Facebook manipulating Newsfeeds for social experiments Facebook research article – Proceedings of the National Academy of the Sciences