I just did a web search to find out what the normal return percentage is in retail. I didn't find anything really authoritative, but, according to this, between 8 and 11 percent is normal:
http://www.quora.com/What-percentage...-store-credits
If you believe the CNN method of estimating returns makes sense, the Kindle Fire is perhaps at the high end of this range. Or it could even be in the middle.
But I still think they have an interesting metric.
5 Star to 1 Star Ratio:
Fire: 1,800 - 513 (3.5 to 1)
Touch: 284 - 76 (3.7 to 1)
K4 Non-Touch: 1,091 - 84 (13 to 1)
K3: 24,840 - 1,308 (19 to 1)
K2: 11,518 - 1,397 (8.2 to 1)
Original Kindle: 4,739 - 558 (8.5 to 1)
While there are other ways to run the numbers, it does look like touch screen owners are, on average, less happy.
I'm sitting here very happy besides the most loved Kindle of all, the K3. Not least of all because I just found some good ammo for the next touch vs. keyboard thread