The Fannie Mae Foundation has launched KnowledgePlex, a web site where lenders can access information on the latest trends and developments in the industry, cooperate more efficiently with peers, and brainstorm housing issues with policy makers and opinion makers in the field. "Solving complex community challenges requires more than just financial resources. It requires knowledge. And it requires a commitment to working together," said Stacey Davis, president and chief executive officer of the Fannie Mae