In the future, I think we will need to make a full background check like when you apply for a credit card to use any service. What do you think?
I'm a bit worried about this and what can we do to mitigate this problem?
Another problem is that this data will eventually get leaked (see quora today https://news.ycombinator.com/item?id=18594564 ), so your real identity will be linked to everything you do online forever.
Why is it bad? You might lose a job, you might get lower credit score or you might even get more limited in life (can't buy flights, high-speed trains, hotels or travel freely...) ... just because you posted something that is not conventional or similar.
'cause we can already see "What's next" - it's a blog post that starts with "We take our customer's privacy very seriously", and then goes on to demonstrate that they did not. (Today's example is Quora. Last week's was Starwood hotels getting popped for half a billion customer records.)