Looking some sort of standalone module that offer page reporting function just like those forum board having. So when few line of code added , there is a button where visitor can click to report specific page.
Instead of heading toward the contact form and have the issue and page URL written, the report module offer one click report, with one click a pop up form show up with page URL entered, and they can choose to express more in the provided text field or leave enter.
Then there is a simple backed to display the reported URL or page and remark.
Part from that, report status can be added at the admin panel, So admin can mark the report as solved, or pending. So it make the the webmaster track down all the report easier.