The IRB Exchange "The Investigators Network" is a great website for private investigators to post questions.

Private Investigators will find this website useful, investigators can exchange ideas, share industry news, post your conference or association photos, ask for advice from other professionals, discuss topics impacting the industry, and make new contacts with colleagues in the investigation, bail, process serving, and recovery businesses from around the nation.
It's free to join.

Link: http://irbsearch.ning.com/