Wish lists?

In the comments to my previous post, Christine made a comment about wish lists - and about how she was thinking about keeping a notebook for books to look out for, rather than little bits of paper, which are all too easy to lose.

And, of course, it made me want to widen the net, and ask all of you how you keep track of books on your wish list?  (I am, of course, assuming that almost all of us are beset by books we want to read on a daily - nay, an hourly, basis. For those of you who aren't... well, just thank your lucky stars that your bank balance isn't under similar threat.)

As for me, I don't actually have a physical wish list anywhere.  I tend to go to Amazon and add things to my wish list there - which explains why there's about a hundred items on it - simply for my own benefit.  My memory is utterly appalling, and it helps to add things there - although quite often I can't remember at all why a book is there.

Mostly, though... well, I just go and buy the book straightaway online.  Bad Simon.

I'd love to know whether you carry around a notebook with suggestions, keep an online list, commit titles to memory, or a mixture of all three - or if, like me, you give your aching memory a rest by simply cutting out the middle man and buying things as soon as you get the idea. (Speaking of which, an impulse Amazon buy the other day was The Maiden Dinosaur by Janet McNeill, as SiaB-reader Tina got in touch to tell me I'd love it... anybody else read it?)