Internet neutrality - what's it all about?

http://mobile.abc.net.au/news/2017-07-13/net-neutrality-internet-wide-day-of-action/8704072

Quoting:
"Key Points:

- Net neutrality is a principle that says all data on the internet is equal
- Trump-appointed FCC chairman wants to wind back Obama-era protections
- Companies like Facebook, Google, Amazon joined action to support net neutrality."
(...)
"It's a broad principle that says all data on the internet should be treated equally. Your personal blog, for example, should be given the same access to the internet as a major international news website.

It's supposed to stop internet service providers selling a "fast lane" version of the internet to big companies and relegating your personal blog to the "slow lane" unless you pay up.

It was bit of an unspoken agreement on the internet, but the Obama administration made it an official rule in 2015."