on so many blogs and so many posts people have a triangle as its center or main image. And i`m sure many people have seen posts with a eye inside of a triangle. Sooo many people post it, very very few know what it means. Its the symbol of the third eye chakra which is located on your forehead.
When looking at someones aura you are supposed to trace a triangle around your subject with you eyes, opening your third eye chakra, and enabling you to see their aura, with practice.

Its not supposed to be a dumb hipster picture, but its become over used to fuck.