Martin Gräßlin (KDE) postulates a 5th freedom for Free Software: http://blog.martin-graesslin.com/blog/2013/08/floss-after-prism-privacy-by-default/ What do you think about it?
Best Regards, Matthias
Btw. Fdroid http://f-droid.org is already going into the direction. There you can choose in the options if you would like to install programs which track your behaviour.