"We setup DNS info to point here (both NS1 and NS2..."
That's great, but it would be nice to see:
"Using the geodns web-based configuration tool, we setup DNS info to point here (both NS1 and NS2..."
or
"Running <insert full command line here including tool and all options used here> on <insert environment here>, we setup DNS info to point here (both NS1 and NS2..."
or
"By editing /etc/<file> on the <some environment>, we setup DNS info to point here (both NS1 and NS2..."
In other words specifics are always really great to include.
But still this was a really great writeup, not just for the overview it gives of one lightweight approach but for the comments it has kicked off.