Would anyone be interested in the "Photography Game" here?

[RRManiac]

I think I'm catching the drift here. I guess we're supposed to take the subject, whatever it be, and then post up a picture that relates to something about that picture:

Ex/ A Southern Pacific caboose is posted up. That means somebody either has to post up something with the same road number, the same road name, or a caboose.

Am I right in that asumption?