There was recently an example of a young girl who had a picture taken of her at a car wash by her friend. This was subsequently uploaded onto the photo-sharing website Flickr. Unfortunately, the picture was placed under Creative Commons: An online scheme which aims to allow photographers, graphic designers and other individuals the chance to use images without having to worry about copyright.
According to The New York Times, the picture of this young girl was modified and used on a billboard for a mobile phone company in Australia, with a slogan that said she was a pen friend that people could lose after getting their own handset. As the girl was distressed and insulted by a picture being used in such a way without her consent, a legal battle began between the family and Virgin Mobile, the company which was responsible.
In the case, it was found that Virgin Mobile was not responsible for this unfortunate outcome. As a result, unless the problem is related to child pornography, it may not necessarily be illegal for someone to post your picture on the Internet without your consent. Advice to ensure you are not affected includes placing the setting of your Facebook page on private to prevent the public from having access to your account.