Barbara Corcoran, founder of New York City-brokerage The Corcoran Group and current "Shark Tank" investor, has given her seal of approval to real estate website provider Real Estate Webmasters, making an investment in the startup that values the company at $50 million. In a general session at Real Estate Connect, Corcoran said she decided to back Real Estate Webmasters in larger part because of her confidence in the capabilities of Morgan Carey, CEO of the company.