@Glorfindel I have edited another answer on What are your favorite puzzles/toys for introducing new mathematical concepts to students? You have edited this one.

I did so to prevent the same question being bumped twice by dead images update on two different answers.

Just out of curiosity I wanted to ask whether that one would be caught and corrected by your script, too.

I've tested the post and it would indeed try to replace the image with one found on the Wayback Machine:

http://web.archive.org/web/20161013200759/http://promotions.advanceweb.com/imag‌​es/products/2009/CP/CP_fun_games/09476_TangleJuniorPuzzle_CP/09476_TangleJuniorPu‌​zzle_CP_med.jpg

It's quite likely that I have taken a different version (from an older snapshot) - but the picture is most likely the same.

Thanks for the response!

web.archive.org/web/20121011012853im_/http://… vs. web.archive.org/web/20161013200759/http://…

The picture I've used was taken from: web.archive.org/web/20110203083435/https://mathoverflow.net/…