now a significant source of real world news
No, it's not.
It's a pit of garbage and exploited ordinary people.
It's not fit for purpose for many things people doing, like the guy making a virtual museum. He should have a website of his own.
We don't want an Internet that consists of only six or seven sites!
Media organisations need to boycott it. They all have their own web sites. Why are they giving Zuckerberg free promotion?
People need an email address to sign up to Facebook. Anything for their friends should be sent Bcc by email.
Unlike specialist forums for specific interests there is no value to Facebook at all. It's simply an exploitive parasite.