Hey - I would echo the comment of a previous poster. Khmer440 - the speakeasy forum is probably your best or at least a better source for information on Cambodia.
I have been a member of Khmer440 for 7-8 years. Many members of the board are active posters. The regular posters are long term residents of Cambodia and have lots of information they can and do share.
If I can make a suggestion - Post on Khmer440 the specific information you need or want. You will probably get lots of grief and snarky comments mixed in with some very helpful advice.