Adding few cents of my own to this. What is the purpose of this policy? Considering that lifespan of potato pictures is less than 24 hours on weekdays. Till Monday, when they pop up on weekend. Community site responding to them immediately, we are soon spoiled with proper official pictures. Not looking to far into past, morning ebay auction with fiends pop up, same day official movie is released.
This forum is something special and unique, but those pictures spread over the Internet like wildfire, this is just one other place where people can/could find them, build the hype, discuss and so on. This policy looks a little bit like fighting wildfire with syringe. Unless there is some serious reasoning behind it, it looks like pointless limitation nowadays.