an increasing -- increasingly important trend in the world and i actually think the question is more what is the right regulation rather than yes or no, should it be regulated? >> what is the right regulation? >> there is basic things, i think there is some big intellectual debates. on the basic side, you know, there are things like ads transparency regulation i would like to see. if you look at how much regulation there is around advertising, on tv, in print, just not clear why there should be less on the internet. should have the same level of transparency required. i don't know if a bill is going to pass. i know a couple of senators are working really hard on this. but we're committed and we actually already started rolling out ad transparency tools that accomplish most of the things in the bills that people are talking about today. we just think this is an important thing. people should know who is buying the ads that they see on facebook and should be able to go to any page and see the ads people are running to different