I don’t like to expose myself publicly on a Web site. Therefore, I don't agree someone post a photo of mine without my permission on a Web site or any social network.
I consider that it’s part of my privacy and, at least, it’s necessary that people ask the owners whether or not the photo can be published.
I can understand that there are people who like to expose publicly their life, but there are many other people who don’t, so it’s a personal decision that can be respect each other.