The EU's General Data Protection Regulation comes into play in May 2018.
It'll have a sweeping effect on how personal data is handled online.
It allows users to refuse to be 'profiled' by advertisers.
There are severe sanctions in place should the GDPR be fallen afoul of.
While an EU regulation, it has implications for online companies like Facebook.
CEO Mark Zuckerberg plans to extend all new rights under the GDPR to all users.
