Free as in freedom, not free as in cost, but part of the deal is that the software code is released, so if there's always the ability to get the source code, where's the money in free software?...
Rudimental - Free ft. Emeli Sandé [Official Video]
Free And Virtually Unlimited Fuel To Heat Your Home
Should DLC Be FREE? - Inside Gaming Daily
Where's the Money in Free Software? - Computerphile
Home Free - Angels We Have Heard On High
Badger's Picks Free Week 11/25/14