Similar to floatrock's proposol [1] of turning reviews upside down... Imagine being able to track broken-ness (when, how, why) in the field across all products of the same model. And doing so for each product you own. "Default reviews" [2] is one way to do it. Pull requests welcome.
1 upside down - https://news.ycombinator.com/item?id=24710832
2 default reviews - https://gist.github.com/iL3D/59df64947d42828d848ebfc1651a312...