basically there are some admins of sites who do NOT like you hotlinking to their pics. meaning you see a pic at
http://www.somefunsite.com/images/classicpic1111.gif - when you see it, it could well be something like a little girl eating an ice cream cone at the park on a bright sunny day. you like it so you copy the code to show someone. THAT pic is now on your computers cache so it will come up like that TO YOU - but the admin, seeing a hotlink to one of his pics, routes it to some guy ben...nevermind. you saw the pic or you didn't.
the admins can help filter that and zrin did all he could to give them the link so they can block images in general from that site so it won't happen again.
people seem to get really uptight about a 4k picture sometimes.