NEW YORK -- When Vanessa Bergmark, along with a partner, bought independent Oakland, Calif.-based brokerage Red Oak Realty in 2009, she worried that the changes she planned would turn off the firm's 69 agents, some of whom had been with the brokerage since its inception 35 years ago. But the firm took the plunge and got rid of desks, desk phones, desktops and paper, making everyone use DocuSign and SureClose to manage their deals. Instead of desks, the firm's agents work at a 14-foot-long redwood table designed for collaboration. Before making the change, she monitored her agents for six months and discovered they really did not use their desks as much as they thought. So, lo and behold, when the desks went, the agents did not revolt. "They realized that that's what they wante...