Hello all you book people. I could post this in Computer Hardware but I'm thinking I'm more likely to find a kindle expert here. Our other half got a kindle for her birthday. Well I didn't know a lot about them, except that you had to get the books from amazon, but our son told me that there were lots of free ones. So I looked on amazon, found loads of free books and started downloading anything remotely interesting onto our computer, ready to be transferred to the kindle. In due course, I connected the kindle and copied the books onto it. So far so good. Later on, I noticed that you can also transfer books directly from amazon onto the kindle and you don't even have to be on your home computer to do it - so I 'bought' several more. Sure enough, when I got home and switched on the kindle, there they all were. But now I've been thinking. In order to get those books, the kindle must have gone out onto the internet to download them from amazon all by itself. Does this not constitute a hole in our network security. The other consequence of doing it that way was that I don't have copies of those books on the computer - which means that I can't back them up. Is there a way to copy them from the kindle onto the computer or do I have to delete them all and 'buy' them again? Which brings me to my final question: Having actually read a kindle book myself, I decided to post a review on amazon and I gave it a good review, partly on the grounds that it was free. But, when I went to make a final check on the details, I found that it wasn't free anymore. Was this just 'one of those things' where something that used to be free suddenly costs money? Or do the free books change all the time like special offers in a supermarket? Sorry for the long post. All answers gratefully received. Edit: Duplicate paragraphs removed.