[ncc-services-wg] dnsmon - why?

Continuing in my previous view of examining RIPE services and alternatives that are available: At the RIPE meeting, I saw http://dnsmon.ripe.net. How is this different than: http://www.caida.org/cgi-bin/dns_perf/main.pl and http://www.cymru.com/DNS/dns.html Wouldn't it make sense to use these services to monitor country roots rather than create yet another new RIPE service? -Hank