I'm curious too. My definition is any type of work that involves more than 80% computer usage and requires technical training. For me, if my great Aunt Viola can do it with her two index fingers on the pc, it might not qualify, but she has turned joke emails into something spectacular. LOL!
Are Desktop Publishers people with Computer Careers? We know that Programmers and software designers are. How about greeting card makers? Most use their pcs to work...so is that a Computer Careers.
Give me some ideas, what is a Career for someone working with computers? It's ok to think outside of the box on this one. lol!