Selling phone numbers on eBay

With number portability in full effect, eBay has some listings for phone numbers. Would you like to own 212-867-5309? I have thought about wanting this number (in the 415 area code), but you would get so many crap calls it might not be worth it. I would rather have 362-4368 from AC/DC’s Dirty Deeds Done Dirt Cheap than a Tommy Tutone song.