How free am I?
Thanks to danbuntu, I've just discovered the delights of virtual Richard M. Stallman - a program that analyses the software on your computer and calculates what percentage of it is non-free.
How did I do?
15 non-free packages, 0.9% of 1635 installed packages.
3 contrib packages, 0.2% of 1635 installed packages.
That's mostly Sun Java, video drivers, Opera browser and Flash plugins.
Never mind me, how did you do?!