Via Tech Crunch

Tom Kincaid, a top Facebook developer and blogger mentioned in the Facebook Developer Forums last night that Beacon seems to be rearing its ugly head once again.
According to Kincaid, he signed up for CBS Sportsline and got a Beacon-like pop-up, which he thinks may have used a Facebook cookie.
“I signed up on CBS Sportsline and joined fantasy football,” he wrote on the forum. “I got a pop-up on the bottom right. It looks like the old beacon stuff. I thought that didn’t work anymore, but it published a story to the homepage. I didn’t go through any kind of connect log in, it must have used the Facebook cookie somehow.”
I joined CBS Sportsline myself and added a Fantasy Football league to recreate Kincaid’s experience. Once I joined CBS Sportsline, I didn’t see the Beacon pop-up. But as soon as I created a team, the Beacon pop-up was displayed saying I created a fantasy football team, which gave me the option of “learning more,” saying it wasn’t me, or simply saying, “No Thanks.”