NPR's Tom Ashbrook recently reported on the "invisible workers" who aren't flashy but keep the world running. Who are the invisibles of the IT world? Rather than compile a list of job titles, I posed the question on Twitter: are you an IT worker who feels invisible? Six respondents turned off their cloaking devices long enough to reply, though in true fashion some requested to be referred to by pseudonyms: Ben, who works at a hospital; JSM, who maintains mainframe-based code for a railroad; Jonathan Russell, who works for IBM; Charles McG, a master of SQL; Annabel, a tech support agent for a software company; and Justin Sabe, who works for a wireless ISP. These are their stories, made visible.