Has anyone noticed any odd markings outside their house? We had a strange red small dot sprayed on our fence, it couldn't really be called graffiti. I then noticed a neighbouring property has a white chalk circle on a fence post. Are symbols left by burglars old wives tales? Or is it someone leaving markers where Pokemon are hiding to help fellow players?! Weirder things have happened. I'm probably being paranoid but have removed both to be on the safe side.