How about adding "report broken link" button to every upload on 3dsl and al? Is it possible? Is it worth a try? I know that all my uploads went down and I found that only two was reported as dead (by 'old' members). That's strange - isn't it?
I have thought more about button pointing to "Broken Downloads" section on this forum. No direct reporting. Just a little trick to encourage people to report dead links.