I tagged my first wall last week. Okay, it was vinyl and not spray paint and at the job not on the city streets, but I feel like it should count. FinderSocial, the blogging/social media department of where I work, asked me to pretty-up their office space. The city to the left is the result. My concept had update bubbles coming from the buildings that were interactive--either white boards or magnetic words or something--but they must not have thought the bloggers would interact with them.