By "free" I meant "I can change it and redistribute my changes in binary and source forms". If you really need an answer to your "so what?" question, then I suppose (and I mean no offense with this) that you're missing the point about open source/free software, IMHO
I'd like to point out that if you look at the daemontools source 90% of the code is licensed under the public domain (which I know, since I'm repacking that code and releasing it under a different license).
