Great!
I think that field with small comment (report reason) is really good idea, I didnt think about it till now. User could say that link its broken or there is missing letter or somethink like that, but I think small button or link after the link in catalog is a good option, if someone clik on it then could report only that link and give a reason, it could be a popup or ajax window, whatever but it should be after link.
examples:
https://www.megventure.com/510-thickbox_default/report-broken-link-module.jpg
https://www.megventure.com/509-thickbox_default/report-broken-link-module.jpg
or it could be a small icon
https://www.fleur-de-coin.com/images/broken-link.png
https://www.minerals.net/directory/templates/cleancss/img/report_16.png
besides your plugin is great!
best regards and good luck
