You cannot prove their age (I've seen 17 year-olds looking like they were 25) and you cannot prove they give their consent to have their seemingly private pic posted, but this can be said about almost any "mirror pic" or home pic. You also don't generally know when a picture has been publicly posted by the person in it, or not.
As soon as you put the burden of proof in the website, you start slipping into SOPA territory.
You cannot prove their age (I've seen 17 year-olds looking like they were 25) and you cannot prove they give their consent to have their seemingly private pic posted, but this can be said about almost any "mirror pic" or home pic. You also don't generally know when a picture has been publicly posted by the person in it, or not.
As soon as you put the burden of proof in the website, you start slipping into SOPA territory.
Not a good idea IMO.