Comparing it with the one or two automatic link checkers in existence, my goal is quite different from them. They have stagnated and are designed around HTTP status codes. Unfortunately, that's not all there is to the web. Links can (and far too often do) break completely without returning 404—they may redirect to a 200 OK "not found" or "under construction" page; there's more: links can be broken because they go to different content. Detecting changes like that is also valuable and is one of my many longer-term goals.

Another idea that I have which I haven't seen anyone else using is link hash checking. Getting sent to the wrong part of a long page is often as bad as a 404 Not Found.

Finally, my goal is to ensure that if a link ever existed, it shouldn't be broken: someone else might be linking to it. None of the competitors have anything like that, either, focusing on the current state of your site.

Those are just a few of the things that I have been working on with it.