I believe the correct term is "collecting" :-)

I usually try to find homes for the old reference books, beyond a certain time they get out of date quickly and the information is usually available in some form on the 'net. Getting rid of some books is a good way of saying "I'm never doing that again" ie. dbIII,access,... :-)

--
Until you've lost your reputation, you never realize what a burden it was or what freedom really is. -Margaret Mitchell