gathering facebook data under the outside businesse ausg it for campaign. that would be unethical. obama campaign used facebook data in 2012. absolutely legal for them and some corporations used it. by the way they did it is by sharing your information with us on the obama campaign and let us talk to your friends and you chose whether or not to do that. you weren t doing it to take a personality test or academic reasons. that wasn t really facebook s fault. that was somebody doing something unethical if it occurred that way. and then the way in which they used it would be the other part of it. martha: there is a lot of questions that you raise whether or not this psycho graphic thing works. they found it didn t really work that well in terms of determining or being able to influence someone s voting decision, the trump campaign has said that they also found something similar. so, chris, thank you very much. just a tip of the iceberg on this. but we will keep digging, thank you very m