Do not recommend Rated 3 out of 5 stars
I wanted to give mozilla some performance data so that they can improve their products so I checked the box and installed this addon. Soon after I realized that the memory usage of firefox just exploded, and would use far more memory then it does typically. One time I only had three tabs open and it used a whole gigabyte of memory. I don't know whether it has to do with this addon or with submitting the performance data but don't want to waste my time figuring it out. And another reason, the graphs aren't very informative so if you are not tech savvy they don't really say anything unless you look up the meaning.This review is for a previous version of the add-on (0.9.1).
This addon does not change firefox behavior. It only activates when you visit about:telemetry to render that page.