SOME STATE DO NOT ALLOW DUAL AGENCY, BUT WHAT IS THE PRACTICE?

We have been having a discussion on my blog on Right or Wrong? Dual Agency and it has been discussed that it is illegal to practice "Dual Agency" in some states. I would like to open up this blog to the discussion on how the practice of real estate is performed in the states that do not allow "Dual Agency". I am from California and we have "Agency" and can practice "Agency" with either buyer or seller or represent both parties in a transaction under "Dual Agency". The "Agency Relationship" needs to be disclosed in writing as to the duties and responsibilities an agent has to their clients. We also need to confirm the relationship when a transaction is entered into in California.
But, I would like to know what is the practice in states that do not allow "Dual Agency".
What disclosures need to be provided?
How do you handle fiduciary responsibility with a client and what is your responsibility to a customer?
How do refer a customer to another agent from another firm to represent them? And, are you able to collect a referral fee?
What are the pros and cons to this practice?
I know that each state has different laws and rules so I would like to have some of these topics discussed here in this blog.
See other blogs associated with these topics provided by myself and other members in Active Rain:
Right or Wrong? Dual Agency
What do you do? When a buyer ask you to show your listing.
(If you would like to have a link to your blog about "Agency" and other related topics, give links in comments and I will post it to this main blog if it applies)