This morning on the BBC World Service broadcasts (which I hear via the PRI distribution on NPR radio stations), there was an interview with Matt Groening, and the topic of bootlegging Groening's material came up. (I hope my con-preparations-blurred mind has the following correct; I think I'm reporting correctly, though.)

While it's true that Simpsons characters and footage are bootlegged all over our media, Groening said that the one that takes him the most aback is that his handwriting has become a bootlegged font. He cited the instance that there's a sign at liquor-store checkouts warning about being of age in order to buy liquor -- in his handwriting.