Similar to other professionals, such as lawyers and doctors, travel agents are learning the benefits of specializing. "Look at a company like Wal-Mart, which does well by selling everything but specializing in nothing," explains Dr. Marc Mancini, a travel industry educator and consultant. "That loosely reflects the large travel agencies out there. They can take care of everything. But, unless you're the mega-mart of travel agencies, you really need to find a niche."