They did something similar around 2010 when they (repeatadly) asked users to enter their email address and password "to see if any of your contacts are on Faceb

They did something similar around 2010 when they (repeatadly) asked users to enter their email address and password "to see if any of your contacts are on Facebook so you can connect with them" with a "don't sorry, we won't save your password" note next to it. What they didn't say was that they pulled in all of the user's contacts and added also them to their "super graph".