it appears that domain names by proxy may not hide domain holders who have porn sites. thanks to GTP and rawTOP for the info.

blog about godaddy's domains by proxy revealing registration info:
http://abdutarabichi.com/godaddy-lea...on-information

from domains by proxy's terms and conditions:
Quote Originally Posted by Domains By Proxy
You warrant that all information provided by You to DBP is truthful, complete, current and accurate. You also warrant that You are using DBP's private registration services in good faith and You have no knowledge of Your domain name infringing upon or conflicting with the legal rights of a third party or a third party's trademark or trade name. You also warrant the domain name being registered by DBP on Your behalf will not be used in connection with any illegal or morally objectionable activity (as defined below in Section 4), or, in connection with the transmission of Spam.
from from the section titled Representations and Warranties on their terms page
https://www.domainsbyproxy.com/polic...main_nameproxy