Darn, Fictionwise seemed like a useful place to buy content from, but if the content isn't portable they can forget it. Bah! I've been burned too many times by loss of support for accessing DRM'd content.
Back on topic
Proofreading large amounts of material is always tedious, one thing I'm hoping for with the next generation of reading devices is markup facilities so that I can make (suggested) corrections to stuff as I'm reading it then submit them. And I suppose, correspondingly spend some time collating and applying corrections from others to works I have not read.