John Miers doesn't seem to have the Jenny Everywhere stoires he drew on his site anymore.
They still seem to be on archive.org, at least. Though the interface is still wonky.
Also, the pages of Mrs. Zirma seem to be out of order. If you look at the archive.org version, the page that's first on the shifter archive is in fact the last, and the next page link on page 3 leads to page 5 rather than page 4.
John Miers seems to be working for me:
http://www.johnmiers.com/library/bacterial.swf
http://www.johnmiers.com/library/valentine.swf
Though I did fix a few bad links.