Edit: I almost forgot to assign this artwork to Anna Garforth. Oops.
Why is this beautiful? Because it’s moss, yes, and so it has a third and fourth dimension over and above normal graffiti or wall writing. But then, after, chiefly because of the comma.
All images tend towards invisibility, and all phrases tend towards noise. In five or ten years, perhaps dangling clauses (or prepositional phrases) will be the primary gimmick of advertising copy, and this just an annoying piece of self-conscious quirkiness in trendy typography. For now, though, periods vastly outnumber commas, and a graffiti of this sort still has the power to follow me round the corner and until the end of my day, uncurtailed by any finite punctuation.