What's wrong with Anil Dash? As of today, the New York blogger, Six Apart's vice president of evangelism, has been at the San Francisco-based blog-software company for five years. Dash, the company's first employee, is one of its largest individual shareholders, but he's mostly vested by now. Why stick around? In Silicon Valley, the custom is to job-hop, to continuously optimize one's career for maximum gains. In staying loyal to Six Apart cofounders Ben and Mena Trott, Dash is betraying one of the industry's unspoken rules. No wonder so many of the ruthless careerists who populate tech companies find him grating. The concept that one might be vested in something other than stock options is alien to them.