Baby's Online Presence

This seems to be a pretty controversial subject these days! How, when, or if you should post photos of your baby online, whether it be on facebook, your blog, google+, or any other social networking site. I am in no way judging what another mom does as right or wrong. I will just state how I handle this delicate situation, and honestly want to know what all of you think about it.
 I believe with the right privacy settings, there can be a safe way to share photos and video of your little one with your family and friends. But, where do you draw the line? Do you have photos of your baby on your public blog? Do you have photos on your facebook or other profile that are not private and only for friends to see? Do you enter your baby into cute baby contests and show their picture to the world?
My stance has been to have photos and video of baby M on my private blog and on my facebook and google+ page for invited friends and family members to see. Also, before I post photos of my friend's babies that I know do not want their baby to have an online presence (or if I am not sure of their stance), I ask for permission. On this public blog, I do not ever state her name or show a picture with her face. I have shown photos of her in her cloth diapers, but not with her face showing. It is so temping to want to show all of you my daughters AMAZINGLY ADORABLE face, trust me, you would all love her! But, I don't feel safe sharing her with people that I do not know personally. I also do not feel that it is fair to post her photos in places where she may come up in a google search and create an online presence for her before she has the chance to say whether or not she wants one. Is putting them up on my private sites even crossing the line then if I want her to have a choice in the matter? But, it is so fun to show her off and brag about how adorable she is. It's also a great way to give my mom and other people interested in the play by play of our life at home a little taste of all of the cute things that she does each day.
When I was pregnant, I shared a few ultrasound photos and pictures of my belly on my public blog. But, when baby was born, I changed that blog to private. Should I have done it even sooner and not have shown her ultrasound photos? I also had my blogger profile picture as a picture of me and M, and recently just changed it.
How do I handle it with other people who want to post photos of our babies together, or of themselves with my baby? Do I ask them to change their privacy settings and only let people know we both know see the photo? Do I ask them not to put the pictures up at all? Do I trust their judgement? This is something I am legitimately asking because I do not know how to handle this situation without offending anyone but continuing to protect my daughter in the way that I think she needs to be protected.

What is your stance on baby's online presence? Does your baby have one? Are your baby's photos public? Why did you decide to make the choice to keep baby's photos public or private?