Do you really want to retire, i.e., play golf? Or, would you rather parlay your time into the projects that are your passion? Many budding entrepreneurs aspire to create the next Facebook, as the glamour of cutting-edge Internet startups has often blinded them to the countless other opportunities available. Brenton Hayden, the 28-year-old founder of Renters Warehouse and Professional Landlord , created a business model that takes advantage of new digital technology to serve a timeless market.