I think we all know how to “lift” pictures from the web. If you use a PC, you just need to right click with your mouse on the picture. A dialog box will open and you will have the option to copy the picture or save it on your local drive. Of course just because you can copy these pictures don’t mean you should use them – you always want to consider copyright!
I am working on a site that wanted to make it difficult for users to copy their logo: (www.mn150years.org).