What is the internet?
To me the key property of the internet is that was built using freely available — open — source code. So the people who built the internet are, by definition, open source developers, as am I.
We open source developers publish our code on the internet. We also publish our documentation, comments about our code, and comments about the code of others.
We also ask — and answer — questions publicly on the internet. See for example stackoverflow.com.
I have found that when I have a question about how to do something, or how to resolve a problem I come across using someone else’s code, that the best way to get an answer is just to look on the internet. It’s my basic reference manual.
Simply put, the internet is the online Open Source Developer’s Reference Manual.
As a bonus, open source developers have provided a means for other to share content on the internet. Some would view that as the primary function, but I see it as a byproduct of our main goal, to provide a globally useful tool to write more — and better — code each and every day, all whilst keeping a public record of our work.