I don't think the lend feature is going to work "offline", i.e. without participation of Amazon. So Amazon would have a full control over who has lend, what boo

I don't think the lend feature is going to work "offline", i.e. without participation of Amazon. So Amazon would have a full control over who has lend, what books and to which people. So they can easily deauthorize them. But that wouldn't work if there were no time limit at all - you could lend a book and disable all wireless connectivity. So why not make Kindle users who have lent book reauthorize every 14 days with Amazon's servers to extend the lease.. Sure, some people would abuse this system but it's not like you can't download more and more ebooks from various not-so-legal places anyway. But then the whole thing is useless - seriously, I can lend some books, for two weeks and only once? No, thanks.