Any new technology needs to fit into existing societal infrastructures, whether it’s the printing press or the closed circuit TV system. Blogging is no different. I sometimes blog about what I get paid to work on, but always check with my employer first to make sure they’re comfortable with it. Since I’m a developer, it’s often general solutions to problems, and if need be, I omit any identifying information. Some folks take it farther..
Now, our good friends at the EFF have produced a legal guide for bloggers, which looks to be very useful, but is aimed only at those who live in the United States of America.