The reality changes. Fast. You won't be able to trust photos, audio recordings, or videos. You will be able to trust digital signature. To have any opinion whether information about somebody else is real you will need a working web of trust. It's gonna be a great thing and I can't wait for it. It's going to change news, politics and in general the world we live in. It's going to be bigger than the Internet but way more polarizing and controversial. IMHO

One issue though, unless we hurry up and make this WoT decentralized and with open protocols, well, we will get it from FB and the likes.