'A picture says more than a thousand words' is a common expression; but what if you take a picture of a word? Will that make it more important?
The sign is from a photoshop contest site named Worth1000. This one I've extracted from a contest named 'Scary Signs' - roadsigns you do not want to see!
Banksy is obviously the creator of photo 2, it's his famous 'what are you looking at' artwork. I went to London last summer and was gutted to find the camera demolished by someone. In my eyes, this did give it something extra since nowadays someone will easily kick your ass just for looking at them..