Cory Doctorow of Boing Boing writes:

We’ve written before about the security vulnerability that allows websites to sniff your browsing history. A paper from UC San Diego computer science department researchers, An Empirical Study of Privacy-Violating Information Flows in JavaScript Web Applications [PDF], surveys which websites use this invasive technique against their users. YouPorn tops the list, but PerezHilton, Technorati,, and Wired are also spying on their users’ browsing habits by exploiting this vulnerability.

Cory Doctorow @ Boing Boing