How long do you keep letters and cards? I don't get nearly as many as I used to (thanks to e-mail -- not sure if this is a good or bad thing....or both) but I still get a fair amount, especially cards and handwritten thank you notes.
A loooooooong time ago I read in a Martha Stewart magazine (I wish I had kept the clipping, alas) that she recommends saving only truly special letters. For example, if you have 24 birthday cards saved from your grandmother, maybe just keep the 5 that she actually wrote a special note in (and get rid of the others that just have a signature). Those 5 notes are a wonderful representation of her correspondence with you, and doesn't get buried in the pile of cards that don't have that same kind of meaning.
I used to save EVERY SINGLE LETTER I ever got. Every one. This sounds so corny, but good old Martha's advice really worked for me! I realized that not only was such a huge collection of letters a hindrance to ever actually looking at them but it was also not a special collection in any way. From then on I would open a letter/card/note and if it had something special about it I'd save it in my letter box. The rest I'd enjoy for a week or so (longer for Christmas cards) and then they'd get tossed.
What do you do with your cards and letters?