Apropos of nothing...<p>One of my mates was a DJ. He had the rule of 100. He only owned 100 records. Whenever he bought a new one, he had to purge another, to stay at 100. Some tough choices were made.<p>My local library auctions their books. The books I donate get added to the pile. Extras are probably bought in bulk by Powell&#x27;s or thriftbooks.com