My parent's have worried a lot about the privacy of my blogging also. I never show kids faces, and I use close shots of things. I had someone comment that my blog was evasive. Yes, it is. A 21 year old wedding photo and only my first name are all that I reveal. And With the kids, yes, i reveal that I have 7, but that's all.
To each her own. But, I am careful. As a genealogist I ahve used my genealogy resources to find old friends. You'd be amazed at how easy it to find out. (Not that I personally go looking...) For example what someone paid for their home, why they got their divorce, and waht brand of T.P. they stock their bathroom with.
I enjoy being part of an olnline comminuty of interests, but I deserve the level of privacy that I am comfortable with.
I reccomend an online set of info birth dates, names, etc. depepending upon your level of comfort or lack of.
Early in my hanging our online I was tracked down. Thankfully it was by someone who was okay. But, what if she was not?
You have to decide.
To each her own.