These articles have something to say about the Yahoo! Girl Genius mailing list (usually, beyond merely referring to it).
“A tradition on the Yahoo! list, similar to (and antedating) the use /Mad subpages on this wiki...Crazy Theory Friday
“The Sneaky Gate ✣ is a secret entrance to Mechanicsburg. Jenka and da Boyz elect to bring Gil...The Sneaky Gate
“The Girl Genius Yahoo! group is, according to its own description, "the FIRST Girl Genius fan...Girl Genius Yahoo! Group