Unfortunately, the Internet is the Wild Wild West as well as the World Wide Web. Individuals put stuff out there at their own risk. Congress or Parliament or whomever can make all the laws they want but if they're unenforceable they may as well not exist.

Having said that, I would hope that most people would use an honor system and ask permission to use pictures. I even ask in a PM if someone has a pic I want to use as wallpaper, even though that's staying on my local machine at home.

Hacking into web sites and stealing pics of really private individual stuff is really heinous.

Just my opinion.