I am somewhat familiar with the concept of link rot. When sites go offline, the hyperlinks that point to them are often considered broken or dead. A few years ago, I lost a few Witness panel sets I had made through Looksy because the link shortener I used for them, git.io, went out of service. I don't know what the status is there because, for example, the git.io link for my Plateaus puzzle still works but the link to the puzzle in its Source does not, but it is unfortunate nonetheless that information can just disappear from the internet. It was about a year ago that I mentioned someone advised me to provide pictures of the puzzles on the posts. I didn't think that the sites I was still linking to were liable to stop working. I did notice late last year that the Kudamono editor started adding a pop-up on puzzle completion asking for donations. I also noticed that this pop-up disappeared in December, so I assumed it had accrued enough donations to keep going. Now I fear the op...
