Blockchain: Facebook's biggest threat

Remember when you first opened a Facebook account? It was interesting, new and importantly, completely free of charge. Or so we thought. Fast-forward to the present day and our relationship with the social network has soured. It’s the same with Google, Twitter and Instagram too. Somewhere along the line the internet giants started getting more out of us than we do from them.
It all comes down to our personal data. We surrendered it thoughtlessly and have been rewarded for our mistake with