Facebook and Big Data

Today's column by Nick Bilton in the Bits blog of the New York Times is a good reminder of the power of huge amounts of data. Harness it, and it can give you a sense of what your users want. But it's also a reminder that every time you click on 'like' or 'share,' well, you're giving Facebook (or Microsoft of Google or numerous others) yet another piece of information about what you like, use, or want.