When it's time to get rid of that old sofa or massive CRT monitor, call Sausalito-based iReuse, who will arrange to haul it away and donate it -- or help you find a buyer.  ireuse.com

Click on the Reuse Center on the right of the page to either, Get Stuff or Get Rid of Stuff.  I tried clicking on Get Stuff and there wasn't much of an inventory at this time.   

Randomly, the website has it's own little game -- the goal, reuse stuff!