UnPackage.com
With spelling of Un-Package in normal copy and also buying Un-Package.com to redirect. Probably get Un-Packages.com and UnPackages.com too until you're sure whether you want the verb or the noun as your main focus.
----begin sample copy----
Introducing Un-Packages -- a greener, easier, and more lucrative way to get rid of things you don't want. It's just as fun and easy as buying something online, but in reverse!
1. Put something in a box.
2. Put it outside.
3. Wait for pick-up.
4. Receive money a few days later.
5. Decide what you want to do with your extra money.
It's really that easy. Request an Un-Package today and have less clutter and more money tomorrow.
_______ end copy ______
EDIT/OFF-TOPIC: Incidentally, I enjoy coming up with names for things and have done it successfully for friends' websites and businesses in the past, but I've never made any money off of it.
I've flirted with charging for a service like this in the past, but I've never gone through with it. If anyone would like a few ideas, I'd be glad to spend a little time on it for either no charge or for an optional gratuity in return for a winner.