Here's a new one.
With the larger companies who have histories of persuing people using copyrighted material are now guilty of the same thing.
there have been many documented instances of private individuals (and potentailly copyrighted material) being used without permission by these large companies for their campains.
If you are going to post photos on the internet, ALWAYs include a copyright notice, and also put that copyright embedded in the picture as well.
http://www.washingtonpost.com/wp-dyn...l?hpid=topnews
cliff notes: some people have actually sued and won (in and out of court) to have licensing fees paid or the images removed.