I bought 98% of my ebooks from B&N because they allow to download them in ePub. I've also removed the DRM from all of them, not to share them, I haven't shared one single ebook yet, but to have them open and readable from every other reader. Tim O'Reilly perfectly got the point.

This is my first message here (sent from my CR-48 with Verizon :)), Hacker News is a great community, I also read you guys on my iPhone, keep working hard!