You might try offering it on your local Freecycle group. I've successfully given away many things through mine. <http://www.freecycle.org/ > The best thing about Freecycle is that you only have to get your item to the door, whoever wants it, comes to fetch it. Of course, if you're uncomfortable with giving out your address, you can always set up a meeting at a neutral location. I usually just give my address - in an e-mail, not to the group - and leave the thing in a clean garbage can on my front porch.
I have also successfully resisted the urge to take the boxes of yarn I've often seen offered!
Jessica-Jean
Last yarn purchase: August 20, 2010