One important thing I forgot to add is that, from my experience, there are
two main categories of partially free software:
one that can be liberated, and
one that cannot be
The first category make use of parts, that can be cut out without seriously
affecting the program functionality (e.g. HandBrake, PlayOnLinux). The other
one is built around a non-free binary, or code, which is essential for proper
operation (e.g. f.lux indicator applet, XaraLX). This is the main reason why
calling the second category simply "non-free software" isn't a good idea.
