Picking nits here, but I just want to make sure you're aware that the
iso names changed between the 6.6 and 6.7 releases for the Install and
Everything iso images.  In 6.6 there was:

ftp://<mirror-site>/linux/scientific/6.6/x86_64/iso/

SL-6.6-x86_64-2014-11-05-Everything-DVD1.iso
SL-6.6-x86_64-2014-11-05-Everything-DVD2.iso
SL-6.6-x86_64-2014-11-05-Install-DVD.iso

...whereas in 6.7 there is now:

SL-6.7-x86_64-DVD.iso
SL-6.7-x86_64-DVD1.iso
SL-6.7-x86_64-DVD2.iso

...which is a little confusing (do I want DVD or DVD1?), especially as
the README in the 6.7 iso directory references the 6.6 naming 
conventions.  One or the other should be changed for 6.8 to make things 
consistent.

And, yes, Thank You for putting the 7.1 Everything build all on a single 
(dual-layer) iso!  I don't burn actual media (everything is network 
install); a single iso simplifies things.

Thanks for a great product; keep up the good work!

-- 
David Thompson
Waisman Center Brain Imaging and Behavior Lab
1500 Highland Ave. Room T133
Madison, WI  53705-2280
(608) 265-6608
david (dot) thompson (at) wisc (dot) edu