Nearly every web site you visit gathers information about you and your internet habits.
What can we do to limit what they get from us? Rand Fishkin founded a company responsible for creating software for Search Engine Optimization (that's when a potential customer typed in something in Google, your company would show up on top). He gives us the scoop on data harvesting that companies like Facebook, Google, Amazon, etc, are vested in, and to what extent it is an essential element of their business. He even tells us about a search engine that DOESN'T gather our information!
Learn more about Rand Fishkin and his new book here.