Originally Posted by kyteflyer
Here's what to do. Go to iTunes, and on the left in the sidebar, you'll see something called Books. Check the list, find the book you want, and drag and drop to a location of your choice on your hard drive. Next, go back to itunes and look at your on-device app list, choose bluefire reader and either drag and drop to there, or do "add" and choose the book you just saved out. Works fine with non-DRMd books.
AFAIK there is no way to simply drag from one app to the other. You will always have to have some intermediate steps.