A Whois.com lookup reveals that that domain (supposedly an Iranian opposition website) is registered by Domains by Proxy, Inc. at GoDaddy.com
A whois.com lookup for http://www.siteintelgroup.com (Ms. Rita Katz' website), reveals that that domain is registered by ....
... Domains by Proxy, Inc. at GoDaddy.com !
It's a small world huh.
Domains by Proxy, Inc. exists solely to allow intelligence operators to create untraceable websites. This is actually a violation of the ICANN rules which require full identification of website owners. Website domains can and have been cancelled for incomplete identification. So it hardly comes as a surprise that a cut-out has been created to allow nefarious operators to create bogus "Muslim" websites.
After all, would a real opposition group need to conceal their identity?