Yeah this is a brutal level of "lack of communication", the bitcointalk account hasn't been accessed since: April 23, 2014, 01:19:56 AM.
@Lorenzo - Regarding finding address and contact information, since the site operator never made any of these public the only recourse is to file a police report, in which case the police can request the information from the hosting provider and domain registrar to conduct an investigation. - However I doubt they would ever give you/us the information directly.
I do recall someone posting in a different thread that they had the site operator's cell number, and even threatened to post it, but then his issue was resolved and his tune changed...
Hoping we hear something in the next couple days.