http://www.businessinsider.com/red-hat-ceo-go-ahead-copy-our-software-2013-8 Title says is all. Nice to know RH understands and accepts the relationship between CentOS and RHEL. Although it is complex. After all, if too many choose CentOS, there may no longer be a CentOS. However, I don't think I would refer to CentOS as a "parasite" as the author Matt Asay does. More appropriate to call it symbiotic. Is the relationship a 50/50 affair? Not sure. Complicating matters even more is Oracle Unmistakable Linux.