The Facebook Follow

Last week while writing about Mark Zuckerberg’s announcement that Facebook is implementing “frictionless” sharing, we noted that Nik Cubrilovic, a software developer, discovered that Facebook’s cookies are more or less persistent.

That is, even when logging out of Facebook, Facebook’s cookies are still tracking you around the Web.

In the hub-bub that followed, Facebook changed the cookie behavior, and a company spokesperson told ZDNet, “Facebook does not track users across the web.”

Maybe not just yet.

As Michael Arrington writes on his new blog, the company just filed a patent application to do just that.

Or in Facebook’s words, they’d like to patent “a method… for tracking information about the activities of users of a social networking system while on another domain.”

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