Blogging at Work

This isn't my first foray into the world of blogging. I have blogged once before, and even thought about becoming a professional blogger. The trick is to figure out what to blog about, in other words, what do people want to read about? What is there about your life, your work, your hobbies that anyone else would want to read about on a regular basis? Judging from the plethora of blogs out there, from ants to zygotes, I suppose the initial question doesn't deserve much thought!