Most of the time, if you have something to say, you should say it once. That's enough. Just once, then move on. Make your point, make your argument, then move on with your life. If you think that a television show is really bad, say it once. Then don't watch it. Stop talking about it. Move on with your life.
You convince few people by saying the same thing over and over. In fact, you're more likely to sound petulant than sounding convincing. If new evidence arises, that's a different story, but if you're talking about something that hasn't changed since you initially said it, you're not adding anything new to the discussion. You're just repeating yourself, and you're sounding as if that's all you have to say.
So just say it once. For example, this week, just tell us what you're doing in the What Are You Playing comments one time. Don't post three comments telling us what you're doing over the weekend. Just once.