Take a quote down
If something you wrote is quoted here and you would rather it were not, send the link to the page and we will remove it. You do not need to explain why, and we will not ask.
A page gets something wrong
Two complaints grouped onto one page that are not really the same thing, a summary that misses the point, a quote that reads differently out of its thread — these happen, and they are the most useful thing you can report. A link to the page and a sentence on what is off is plenty.
Everything else
Questions about how the site works are answered on How this works; anything that page does not cover, the address above does.