Ha! Gotta love craigslist "Free" section. "Hmmm...this trampoline doesn't seem to be working very well, I wonder what could be wrong...."
Oh, and don't EVER post a free 10-yr-old used mattress. I literally had 10 e-mails pile up in less than 5 minutes after placing the ad. Amazing how many people will gladly sleep on a 10 yr old mattress from a complete srtanger!