chevy. if i'm upset with facebook, what's the equivalent product that i can go sign up for? >> well, there is the second category that i was going to talk about. >> i'm not talking about categories. i'm talking about is there real competition you face? because car companies face a lot of competition. if they make a defective car it goes out in the world, they stop buying that car and buy another one. is there an alternative to facebook in the private sector? >> yes. senator, the average senator using 8 different app.s to communicate with their friends and stay in touch with people. >> okay. >> ranginranging when texting app.s to emails. >> service you provide. >> we provide a number of different services. >> is twitter the same as you what you do. >> it overlaps with what we do. >> you don't think you have a monopoly. >> it certainly doesn't feel like that to me. [laughter] >> so it doesn't. instagram, you bought instagram. when did you buy instagram? >> because they were very talented app. developers