Facebook has share buttons on all the world's media. Each one of those views is almost certainly recorded by Facebook, even if you don't have an account. The on

Facebook has share buttons on all the world's media. Each one of those views is almost certainly recorded by Facebook, even if you don't have an account. The only way to stop it is put a DNS block ( hosts entry ) on your machines. If you think Facebook records less data than bluekai, I think that is very very unlikely.