|Hm, I wouldn't go as far to demand that a participant in the forum has to be a vert roller skater. But I agree that the subject has to connect somehow to vert roller skating or vert roller skaters. We often have subjects that have nothing to do with skating but are of a personal nature.
Maybe he wants to discuss his video with vert roller skaters? But then he should state this and maybe even introduce himself. Otherwise it's easy to gain the impression of spamming. At least he is a real person and not a spam bot. We haven't had spam bots here since the introduction of RECAPTCHA.