Although some states ban the practice, called dual agency, in which the same real estate broker represents the buyer and seller in a real estate transaction, most states have settled for a kind of disclosure Band-Aid that doesn’t work well for consumers.
It’s a little like the warnings on cigarette packets about the dangers of tobacco that really don’t make much difference to those who really want to smoke.
The problem is — and all real estate agents understand this — when consumers find a house they want to buy, they become so emotionally involved in the purchase that they barely listen to the legalities because they are focused only on two things: price and purchase.
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https://realtyconsults.wordpress.com/2011/07/16/dual-agency-disclosures-fail-homebuyers/