"Looks like the weak link was the use of clearnet:
When they caught the main admin after tracing the source of the postal shipment, they found out that he was in frequent communication with the co-defendants via clearnet, such as Skype. They raided his home and discovered his chat logs, subpoena'd the identifying info of the co-defendants, and raided them. "
VIA /u/5four3two1
/r/onions/comments/20qzi6/pedophile_ring_that_operated_through_tor_nabbed/
Skype? SKYPE? skype?
clearly theyre geniouses.