User Activity Meter plugin

What do you think about it:

A plugin that counts (and displays of course) the following information:
- distance "drawn" using mouse ("odometer")
- number of keypresses (divided into shortcuts key combinations and simple keypresses)
- How long every application window was active

There can be other counts (they are less important):
- number of message dialogs displayed by Windows
- number of minimize/restore/resize operations
- number of times a menu is used
etc

This information is gathered separately for current Windows session (from logging in to logging out) and total (since plugin was activated). Total counter can be updated simultaneously with session counter or at logging out.

X.