That's fascinating, MusicianDad. For me, the line is in a different place.
For example, if my dd, who is about the age of MeeMee's, posted on her own blog that she was excited about her breast buds and had been dancing around the bathroom posing for the last hour, I would be concerned about the type of attention she might attract with that, and I would take the post down for her and have a chat about safe boundaries on the internet.
Given that I wouldn't allow her to post a description of this activity for herself, I also would not do it for/about her.
I would have a quiet chuckle about it to myself, and with her dad, and it would be a light and lovely moment, but it would be a private one.
I think sometimes we forget that MDC is the largest parenting site on the web. It has a lot of posters, most of whom claim to be parents. Most of them are probably honest, but it's impossible to verify the claims of any particular individual. MDC also has a lot of lurkers, who aren't claiming to be anything. Over the fullness of time, a lot of us here have posted more identifying information than we may really have realized or thought about. I err on the side of preserving my child's dignity and privacy.
We are getting off topic, so I'll just say for the record that I do believe at some point we need to start providing more power to the child to decide what is acceptable to mention to others and what isn't. Dh and I have discussed internet safety with DD and we both made the promise that we would ask her before posting information about her. Which is why you don't see many posts about her from me.