In the day job, I deal with a lot of interactions between members of the public and ourselves, and our partners. If you're in any way involved in working with user data, then you'll have heard about GDPR.
To be honest, this is quite a new world for me. Even though I've been working in web development for many many years, it's generally been in the business or corporate space where we're less concerned about these issues. What I've learned has really opened my eyes to exactly how you see those adverts tracking you around the internet and the huge amount of data that various providers know about you to be able to do it.
The video below is only 30 seconds long, and, to be honest, slightly underplays the number of companies that get to see your profile data as you browse around the internet. But it's a good grounding.
GDPR is going to shake up a lot of how this all works and I don't think there is really a plan for how internet advertising is going to work after May 2018, but, in the meantime it's worth visiting YourOnlineChoices.eu in the short term to see what's being tracked in your browser.
The service there is a voluntary one which the main players in digital media have signed up to. It allows you to opt out of being offered adverts by different providers. So, if you opt out of everything there, then, often you'll see far less advertising as you browse.