I give Microsoft a lot of grief about stuff, partly because the company is responsive, partly because I know the company can do better, and partly because I know I'll be spending a lot of time using whatever new package of bits that the company puts forth.
But sometimes Microsoft gets something dead on accurate, and when that happens it deserves a shout out. One example of how Microsoft has used the telemetry is gets from users to improve something dramatically is the new Task Manager in Windows 8.
Take a look at this:
This is brilliant. Utterly brilliant. It's brilliant because this one window gives users easy, one-click access to the most commonly used action in Task Manager - ending a task. Microsoft has the telemetry to back this up:
Note: OK, let's get all the jokes about this being the most used feature out of the way before we go on!