..big wooden that hangs the swinging sign below is what he is talking about ... provide prompt service be on call 7 days a week and keep the signs clean and straight .. I would think you could keep pretty busy .. here in the land of nuts .. we have at least two - three companies doing just that ... on top of doing the signs ..
Why not host a real estate website showing either pictures or video of inside of house for all to see check with Don about that little bit .. I think he is making some bucks doing that ... right now ...