Consider the Netflix and AOL search data, where people could (maybe) be identfied from "anonymized" data. Or the facebook gaydar thing. http://33bits.org/2008

Consider the Netflix and AOL search data, where people could (maybe) be identfied from "anonymized" data. Or the facebook gaydar thing. http://33bits.org/2008/09/30/law-review-article-about-netflix-paper/ http://33bits.org/2008/09/30/law-review-article-about-netfli... harvesting emails, that is an established business model called...