A more recent problem with Stack Overflow now that its a few years old. The tech gets updated, and previously good answers are now out of date, as libraries and frameworks have changed.
This system has had some issues and may still be adjusted, but I think it's a lot closer to the mark. I've probably gained close to 1000 rep so far from documentation I contributed to but did not author.
That's interesting. I wasn't aware of the trickle down karma like that.