Where can I find more information on guidelines for posting identifiable information on a personal blog?

I was wondering if there are any legal and ethical issues when it comes to writing about specific people, places, and events in your personal life. For those of you who write in public blogs, do you share your true name and location? Do you write about specific details of your life but change the identifable information? Where can I find more information on guidelines for posting identifiable information on a personal blog?wiki