What do you do with your old guide books? I'm having a much-needed clearout of junk, including the vast pile of travel guides in the hall.

They're out-of-date and useless for reference. I also have several guides to some places - I've got every published edition of the Time Out guide to Paris, for instance so the're duplication. And since the information is no longer reliable, they're no use to anyone else (a thrift store wouldn't want them) and I should really just take them up to the recycling point.

On the other hand I would hate to throw them out because I was brought up to cherish books of all kinds. Besides, some of them now have historical interest (I have a New York guide with a big picture of the Twin Towers on the cover) and in a sense they chronicle my travels over the last decade or so.

Do I hoarde them or just fling them out? Grateful for your advice.