I posted earlier about using the Wayback machine to find stuff that had disappeared from the Web. In the example there, I found a rubric for which the URL was known, but for which the hosting web server was down.
Just a few days later, almost the same problem came up on the same mailing list, but with a different URL. People were looking fo an animation that used to be at http://126.96.36.199/pub/flash/26/transmenu_s.swf and once again the Wayback machine easily found archived copies (such as the one at http://web.archive.org/web/20060614121509/http://188.8.131.52/pub/flash/26/transmenu_s.swf). This was sort of boring, though, and I was beginning to wish for a lmstwmfy (let me search the wayback machine for you) site like the lmgtfy (Let Me Google That For You) site.
Finally, someone asked an interesting question:
Hey Mr. Peabody,
Sherman here! I am trying to use the wayback machine to find the companion animation for the one that you just found. I do not have its address. It is on DNA replication and goes through all the steps in the replication process, reviewing all the enzymes. It is made by the same group as the one on RNA transcription and translation that you posted. If you could help me locate it and post it, many would be VERY happy.
This is more interesting, because the Wayback Machine does not have full indexing, so I needed to find a web page that no longer exists, based on it being related to another webpage that no longer exists. As I expected, Google was very helpful here.
I looked for pointers to the missing web page whose name I knew, googling pub/flash/26/transmenu_s.swf
The second hit (the only one I looked at) was a list of pointers: http://teacherweb.com/TX/McNeilHS/Passovoy/links2.aspx
Looking down the list for the known site, I found an immediately adjacent listing for Animated DNA and replication review at http://184.108.40.206/pub/flash/24/menu.swf
Now that I had the URL, I could go to the Wayback machine and look for it, finding
(There are other copies if this archived version is damaged—my browser at work doesn’t handle swf files, so I can’t check that the retrieved copy is good.)