Hehe, I do believe he is talking about prostitutes. I'm not an authority on anything youtube, (just getting started), but it feels like interviewing people about their job and asking questions would be fine. Because of the explicit nature of the conversations, it might violate some kind of youtube rule. Maybe a warning in the beginning of the video?hi, you mean street pedestrians or dog walkers? I dont see why not, but it might be a good idea to have them agree to the video recording on the video itself (you dont have to show that part but keep for your records)