Robert_Charlton - 8:50 am on Mar 4, 2012 (gmt 0)
Here's an article related to the above from businessinsider.com...
22 Incredible Images That Show Why Pinterest Gets 1 Billion Monthly Pageviews [businessinsider.com]
The images in the article make it immediately clear why Pinterest is creating all the buzz it's creating. The article also makes me think that Pinterest is very likely to get sued and lose.
No way are the owners of those images eager for widespread exposure on the web. Half the value of such images is their novelty value. Licensors of stock images are frequently asked by potential licensees whether the image has already been shown a lot, and the desired answer is "no".
...fair use. Copyrighted work can only be used without permission when someone is criticizing it, commenting on it, reporting on it, teaching about it, or conducting research.
To satisfy fair use requirements, Pinterest could create an input form that requires a comment before pinning... and perhaps have pinners use the image to search Google Images by Image [google.com], which would prove research as well.... IANAL. ;)