Sgt_Kickaxe - 5:21 am on Feb 28, 2012 (gmt 0)

However, some have raised concerns that the format encourages unauthorised sharing.

I'm guessing whoever wrote that has no clue that Google, Bing and Yahoo steal ALL images from EVERY website that doesn't actively block them and that they don't often send traffic because of how their image search is designed to keep search users ON the search engine site.

Bing - hotlinks and does not allow frame busting
Yahoo - same as Bing, probably because they seem owned by Bing now
Google - allows frame busting but is throwing a warning message more often now.

That article sounds like it was written by a politician with little grasp of the mechanics, this isn't a new problem and pinterest is being unfairly singled out.