In the words of housing consultant John Burns, bulk sales of REOs could be a "game changer" for the U.S. housing market. The Obama administration this summer floated the idea of selling foreclosed homes to investors, who would agree to rent them out. The interest in a REO-to-rental program was so high that interested parties flooded the government with nearly 4,000 RFIs — or requests for information — in September when the topic hit fever pitch. The pool weighing in on the matter is vast.