Earlier quoted context omitted.
I've never really understood this limitation. It doesn't exist for physical books (of which I've bought plenty), and it's the one thing that held me back from buying a Nook.
I would assume the thinking behind time limits is that a compromised Nook or Amazon account could be used to buy a crapload of books and then lend them out permanently. Doesn't seem to make a whole lot of sense, because they presumably know who you've lent them to. Then again, non-limited lending raises other issues. How do you get it back? Do you allow the purchaser to forcibly take it back, removing it from the bor…
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.