A New York Times article on BlueKai was really interesting. It said:
BlueKai's business model stands or falls on the idea that our digital profiles are anonymous at the time they're auctioned off. In fact, computers can link our digital profiles with our real identities so precisely that it will soon be hard to claim that the profiles are anonymous in any meaningful sense.
With my tracking experience of going to a financial adviser, trying to find a place to go in Cuba, and how much booze I bought for the Christmas party because I was looking at various prices, that's not anonymous data. That's fairly easy to link to me as a person. Is that correct?