Originally Posted by JSWolf
If I have iBooks and Bluefire on an iPad, when I drag an ePub to the iPad via iTunes, which app gets the ePub?
Depends where you drag them. If you drag them to the 'Books' tab of itunes they end up in iBooks. On the Apps tab, near the bottom, there is a Bluefire section (it will also list other apps that support this type of file transfer method if you have them). Dragging a book to this section will make it available to Bluefire.