Gazelle.com appealing to base instincts feels very much like its 2005 all over again.

The perceived and actual value for used objects?

What happens when you know the real-time market rate for everything around you? Objects reduced to a number?

The markets it creates?
How it changes people’s sense of ownership? Use? Abuse?
The ability to time and location shift the exchange of objects?

Taobao, Rakuten, Ebay and increasingly Amazon – the latter as the seller of new objects, and the tracker of how long you’ve owned it, and when you are likely to want to sell it.