Hi everyone, now that I'm back to school, can any students or teachers here recommend a good textbook app/reader for the iPad? I know it's still pretty early in the game for textbooks on the iPad, but if many of my text/required books are available digitally I will definitely buy an iPad sometime this year. The thought of wasting hundreds of dollars on novels and/or textbooks I won't use again makes my piggy bank curdle. Any suggestions on how to search for e-textbooks besides using the ISBN? thanks!