Online companies partnered with Facebook to unleash a new advertising strategy called Facebook Beacon. Now if you purchase, save, or look at something on one of those websites, the website will send your data to Facebook. For example, if you buy a movie on Blockbuster.com, it will publish your movie selection to your Friends' News Feed WITHOUT YOUR PERMISSION.I thought this was a hoax, but apparently, Facebook has given each site a piece of Facebook javascript to identity whether or not you are a Facebook user. Here is the story in the NY Times. Here is a blog entry about how to block the javascript (read: how to block Facebook Beacon). Here is a blog about the evolution of Facebook Beacon.
