Manage (and make cash with?) your data online

(CNN) -- It's a truth of the modern digital age: If you're using a Web service for free, you're not the customer. You're probably the product. The sites we visit, the videos we watch, the purchases we make and the items we reward with a Facebook "like" or a Google "+1" -- all of that, and more, eventually melds together into a data set that lets many of the world's most popular Web companies...

Read More