There's a reading feeding frenzy going on here. Be warned: this ad-free, well-lit place is addictive, because who doesn't want to see what's on other people's shelves? Answer me that. In one click, you can invite everyone whose e mail is stored in your address book to join, which is what I accidentally did, and then I thought, wait! Who wouldn't I want to be my friend over there? That wasn't the worst mistake I ever made.