clutterbin.com Think about what you're doing for people and maybe you'll get more ideas. You're helping people by making it easy to clean up their unwanted clutter and then magically, they get money and peace of mind because they're not surrounded by stuff they don't want :-)
If you added in a positive effect to this (think along the lines of cash4gold), so clutter4cash or something (it has some rhyming to it too, which has been proven to improve recall of product names), then you're onto something. [EDIT: or is that 'cash4clutter'?? I never know which way around the before/after should be!] [EDIT 2: PPS - great idea for a service!]