The story of Homestore and its Realtor.com Web site is a classic and chilling tale of power and greed that includes something for everyone. It’s a story of dot-com mania and megabucks, mergers and acquisitions, hirings and firings, failed ventures and high-flying stock valuations, suspicious dealings and shady characters, phony financial statements and allegations of fraud, and finally investigations by the U.S. Department of Justice and the Securities Exchange Commission and a $1 billion class-action shareholder lawsuit.