[Air-L] e-books

Hi All, I'm just curious. How many people actually read e-books in the DRMed format that publishers provide through a browser interface? I'm at Stanford this year, which has lots of titles in electronic form. But many of them are unreadable past a couple pages. A .pdf that could be displayed on an e-reader device would be fine, but I can't see sifting through a web portal that lets me do a whole lot less than what I could do with a physical text. If I really want to read the book, I get the physical copy or see if there's a .pdf floating around. Best, --J