To me I write these articles as one single person.
If they help someone, but during that help they've noticed something was outdated or had a typo the incentive is that they can make it better for other people.
So my idea is to pass on the knowledge by improving it for future readers.
Might be a bit hippie-dippie from me, but that's my vision. 😅
And ofcourse it could be their first intro into technical writing, by learning from how I do it and making small changes.
Andrew Wooldridge
eBay WebDev
Usually open source projects present some benefit to the users as well as the author. What incentive do you give to someone who wishes to contribute to this site when the only seemingly beneficiary is yourself?
I'm not trying to facetious, just hope you can clarify that aspect as it's an essential part of the picture. Open source projects usually seek to benefit everyone who uses the project.