It does? I have a blog, a well-used Facebook profile, an active twitter account, and I comment on Reddit and HN all the time—but the last picture of me that exists on the public internet is from 2005. All the photos I actually want to share with my family are in a shared folder in my Dropbox account.
I guess I have a strong mental separation of my public and private lives; I would never talk about my family on my blog, nor would I talk about my job on Facebook.