It became a curation of what I think is the best street art, no matter where it's from. Most of the images are sent to me by artists, and occasionally there's still some of my photography.
Among other things, Unurth highlighted for me the power of doing something you love. I've spent countless hours on it, purely because I love the process of finding great art, but I've got much more out of it than I put in. And happily it's also helped a lot of artists and people looking for art (over 5M so far).