Hi!
rfc-ignorant.org 91.9% (And this is actually just a delegation point.) surbl.org 3.2%
rfci had 29k queries in the few minutes I ran dnstop.
Our rbldns servers do a combined 3-4Mbps in outbound DNS answers - primary traffic load is from the rfci and spamhaus zones which we secondary for the public.
Be warned, when the SURBL gets into a default SA release we will see the traffic scream up. Be prepared to serve a few mbits of DNS traffic.
If you are using the latest rbldnsd and send a SUGUSR1 you will see stats printed in your log, more accurate :)
I am running also a slave for RFCI on the same box, doing ok...
Bye, Raymond.