Plus it's the principle of the thing. It's fine to share on Facebook or Twitter or your blog or Flickr. However you're sharing your images on your account. As soon as it's other people deciding they are going to share your image wherever they choose to share then you've lost control of where the image appears. For some people that matters - for others it doesn't. There will be people who take other people's work and then try and make money out of it. Then there are people who get others to take images for them - and then make money out of it - and that's what the Pinterest owners aim to do. The problem with Pinterest is that few actually stick to the terms and conditions of usage - ie they are posting images they don't own and ones which they don't have permission to share. That's a problem for some people who draw, paint or take photos. I think for a lot of people at the end of the day this site appears to be encouraging activity which in effect is like saying copyright doesn't really matter. That has far wider ramifications. Yet it very much does matter for some people if they are going to protect the work which generates their income. Thank you for that wonderful information. I inserted the code to my blog. Unfortunately the problem gets worse as many sites have sharing features such Like buttons and "pin" buttons and other buttons. I