What is exposed about you and your friends when you login with Facebook


(click to embiggen)

When you log in to a service with Facebook, the company exposes an enormous amount of sensitive personal information to the service's operator — everything from your political views to your relationship status. What's more, logging into a service with Facebook also exposes your contacts' personal information to the service: their locations, political views, organizations, religion, and more.

…and here's what a brand knows when you login via facebook
(via Dan Hon)