Sign Twirler Sighting

I have seen YouTube videos of sign twirlers for real estate in California's central valley for at least a couple years now. Today, for the first time, I eyeballed one in the city limits of San Francisco, at the corner of 7th Ave and Lawton as I was riding my bike. Though San Francisco is finally starting to have some major price corrections in real estate, hopefully this is an early indicator the real action is about to begin.