Facebook collects a lot of data from people and admits it. And it also collects data which isn't admitted. And Google does too. As for Microsoft, I don't know. But I do know that Windows has features that send data about the user. ↗
The rise of Google, the rise of Facebook, the rise of Apple, I think are proof that there is a place for computer science as something that solves problems that people face every day. ↗
Who doesn't want to shoot for 'Vogue?' I remember updating my Facebook status to say 'Doing 'Vogue' today', it was so exciting. I thought it would be really intimidating, and I don't like photoshoots, but that was the most relaxed one I've done. ↗
I've never gone on Facebook and am not sure I understand it. The same goes for Twitter. I have someone sending tweets and pretending to be me, but I don't know why. ↗