Google just announced Account Activity, a new feature that let you see what you’ve done on its services every month. Big companies like Google and Facebook know how valuable personal data is: it helps get more customer, and it can be sold more or less directly to advertisers.
It’s also useful to their customers. I suspect my personal data is most valuable to me, I’m sure I can get more use of it than Google or advertisers. This extra data is another reason to use Google’s services. Well played Google, well played.