Hacker News Reader

I'm curious - if I have a clean browser history(no Facebook login ever), and Facebook still tracks me, how does that information benefit Facebook?

Alternatively, how does it affect me?

View on HN

Their official stance is that these cookies are used for fraud detection: https://www.facebook.com/notes/alex-stamos/preserving-securi... In theory, Facebook could also sell these ghost profiles to web sites that have the Facebook like button or Facebook comments and want to show personalized ads.

>Alternatively, how does it affect me?

They still record your IP address and link it to all the sites you visit that have a facebook script.

Reply on news.ycombinator.com