If you are letting us know about a broken link, please tell us what page the link is on and where its supposed to go to...
Cutting-and-pasting the link into the "Message" box at left probably suffices, if that's easier for you...and thank you for letting us know.
Email addresses are not shared, and we will not reply except to confirm that your email was sent. But if a reply is requested, many email programs mark messages from websites as spam. That much spam comes from robots exploiting "contact us" web pages is why we have to make you prove you're human with the reCaptcha. If you expect a reply, let us know and please add firstname.lastname@example.org as a contact in your email so it doesn't get stuck in your spam folder.