Customer To Customer (C2C)
The customer to customer business model is an interesting phenomenon that has experienced quite profound changes throughout the course of time. While customer to customer transactions began as more or less trading the apple from one garden for the tomato in another, in today’s day and age, customer to customer business is much more common in the form of websites, like eBay or Craigslist.
The good news is that, for those crazies who are looking for the most off-the-wall junk, chances are good that someone is selling or offering it. And yes, it turns out there's a customer to customer market for purchasing someone else's belly button lint. Couldn't make it up if we tried.