They've just published their first Girl Genius novel, via Night Shade Books, and they (and we, their fans) our encouraging folks to check it out and buy a copy today because it just happens to be Kaja's birthday.
The Agatha Heterodyne stories are great, the Foglios are great people (and they're my friends as well), so I encourage you to find out more at http://www.girlgeniusbooks.com !
Oh, and buy a copy of the book today!
ETA PS The campaign seems to be working. The book started at around #5400 on amazon.com this morning and has now climbed all the way to #21 in books (not to mention #1 in Books > Science Fiction & Fantasy > Fantasy, #1 in Books > Entertainment > Humor > Satire, and #1 in Books > Literature & Fiction > Comic)