Modern Mom, for which I used to write, has published an excerpt of Mortified: A Novel About Oversharing which explains how and why the main character, Maggie Kelly, decided to start an anonymous blog in the first place.
Feel free to take a peek. If you like what you read, please, by all means, buy the whole book.
Additionally, I wrote an original post for Modern Mom about how and why I have almost entirely stopped blogging about my kids. (Answer: Because they asked me to zip it online.) I explained how I decided it was safer to explore the subject over "oversharing" about one's family fictionally, via my fictional blogger, Maggie.