Everything you ever done.
I recently heard that one day it will be available for everyone to see, review, read...or whatever...all your activity you have ever done on the internet.I am not sure how true that is....but what is to stop whoever from doing so?
How would you feel if everything you have ever done online is shared?
I think I would be okay with it. After all, it was well known that everything that is done on the internet was/is not entirely private in the first place.
It would be a great way of identifying who many people really are.