Blog writing is fun, and can be extremely profitable, but putting your thoughts and words out there for public consumption, with little or no editing or system of checks and balances, is not without risk. If you are worried about the potential legal ramifications of blogging check out the Legal Guide for Bloggers. This is an excellent document which, although it states outright that it is not a substitute for actual legal counsel, is a wonderful guide through the potential hazards of blogging, what your rights as a blogger are, and how to defend those rights.
The Legal Guide for Bloggers is provided by the Electronic Frontier Foundation, which is an absolutely excellent resource for bloggers! I cannot recommend it highly enough. It is filled with issues that are of concern to any thoughtful blogger, including free speech, privacy, intellectual property, and international issues. It also includes descriptions of actual legal cases and court rulings for each issue.
If nothing else, taking a look at this website will make you feel pride in what you are doing with your blog. “With great power comes great responsibility”; the EFF will make you want to take both more seriously.