Re: [Trisquel-users] If I install CentOS 6......

[onpon4]

CentOS is a gratis version of Red Hat's Enterprise distribution, which has  
mostly the same policy as Fedora (the only exception is a trademark  
restriction on the Red Hat branding, I believe), so any proprietary software  
that exists in CentOS, other than the firmware Fedora and Red Hat make an  
exception for, is there because the CentOS developers added it in. This might  
help locate and remove/block such packages.