Local webcomics artists and generous Strangercrombie donors Phil and Kaja Foglio have declared today to be Girl Genius Day. They would like their fans to purchase copies of their new young adult prose novel, Agatha H and the Airship City on Amazon today in order to push the book up in sales rankings and earn it extra attention, Machine of Death-style.

And if you prefer not to give Amazon your money, the Foglios are reading at Ravenna Third Place Books tonight. RTP just got in a big shipment of the book, which is apparently sold out at the publisher, so if you want a physical copy of Agatha H in your hand immediately, they're your best bet.