Yeah, there's an orientation lock. When you're in a book, tap the middle of the screen to access the menu. on the bottom menu, there's a gear symbol that will take you to the in-program options. There will be a switch to turn on or off book rotation. There are tons of options there, as well as options in the iPod Touch's native Settings app. Now that Stanza has access to Project Gutenberg, it really is an essential app.