Many of us have a certain “thing” we like to photograph when traveling. For some, it’s food. For Gadling blogger Mike Barish, it’s amusing signs, as well as himself with various SkyMall products. Personally, I like graffiti, like today’s photo from Portugal taken by Flickr user Rita Moreno. The graffiti is practically arty in it’s framing, colors, and even the tears in the paint seem thoughtful and eye-catching.