http://www.dnsstuff.com/tools/dnsreport ... artrls.com
Explains it in better English I suppose, or in case you think i'm a crackpot, lol.
(Or to take it a step further.. some dns caches will freak out and when trying to verify the glue record for ns1.. ping ns1.bluegartr.com yourself, it won't work Most that I know of trust the root servers and don't question the glue.)