So you spot some Hobo. It's exciting, yes. But remain calm and consider these points before you take a picture.
Is it the best time of day to photograph it?
Does including people make your picture stronger? If so, what kind of folks? An owner, a patron, etc.
Are you showing context?
If you're driving, biking, running or walking, be extra safe. But get that picture anyway. Include windshield wipers, rearview mirrors or other obstructions because it shows how you encountered it.
Look in the vicinity of your find. What makes your Hobo distinct? Is it funny? Is it in a surprising place? Is it surrounded by a ton of other type? Show us more than just the sign if there is more.
If you find a Hobo that has already been photographed (Popular brand of Clementine's for example), take a picture anyway, but make it specific to you. Photograph it in your local store, or your house, or in your part of the country, or taken with your camera.
If it is on television or at the movies, try to show a bit of the TV set, or a station logo or other context.