Every blogger should know the story of Heather B. Armstrong, nee Hamilton. In February 2002 she was fired from her job for blogging about her job. Blogs were relatively new at that time, and they were on few employers’ radars. Hamilton, though, crossed an invisible line — one not explicitly defined by her employer — and paid for it. She coined the term “dooce” as a label for anyone fired for blogging. Five years later, most people online know the drill: Don’t blog about work, unless your employer approves.