I've submitted a DMCA - although whether they adhere to it or not I don't know considering they are brazen enough to have the Harry Potter books on here.
Attention AO3 WRITERS!
Your fiction has most likely been stolen, repackaged, and is being sold as e-books on Ebooks Tree. Please go and 'search' for your fic (in the search box, the alphabetized list doesn't show you everything!), and then go here for more info/ to find out how to get it removed.
ETA: It's pretty funny that they've even got a podfic announcement entry on there!