Shouldn't there be a rule to prevent burst-posting or spam such as this?

[Natalim]

This might not be something that directly harms the forum or its well-being, but it's painful to watch.

This is behavior is very common among newbies who have refused or rather are too lazy to do their homework on the forum. They probably think that this forum is like other forums where the behavior is accepted. In my estimation, I'll ignore him however if it bothers you so much, just report his posts and the.mods would lock the topics if necessary.

This is very common to those who are only posting for their own convenience, not thinking what would be the effect on it on the forum. This is obviously a proof of laziness as he fails to spread out more his posts when we all know its highly possible if we can manage our time properly. With this, it can be a lesson for him to be reported to the mods so that he will come also realizing his lapses in the forum.

[Doan9269]

The best we could do is to report such spammers to the moderators for doing such, and if we see such a thing persist, then we can ignore them or tag as well if needs be, this kind of spam is made obvious and i don't think it could be condoled by any standard or quality posting ethics, users like this are either scammers or trollers trying to invade threads with bursting posts, it is important that one knows how to spread the post across the boards as well as making a quality content on them.

For further information, some people may need to be reminded of this.

posting etiquettes
https://bitcointalk.org/index.php?topic=5184741.0#post_altgiveaway

[Alone055]

Exact same thing is currently happening on games and rounds as we speak.

Go look to see posts done within 1 minute a part from a legendary member spamming their promotional garbage.

Why are they even allowed to do this on the forum again?
They are above the forum rules from one member to another?

Did you check his posts before saying this? He is managing giveaways and contests on that board, and the problem we are discussing here is not just about making a lot of posts, it's about making a lot of low-quality and useless posts. The user you are referring to isn't posting garbage because he is making posts about the contests and giveaways the casino is conducting. You can see reputable members and even staff members participating in those contests because there is nothing wrong with that, it's a normal thing.

If you find a legendary member making a bunch of useless posts, even if it has positive trust, you can report them to moderator and no one would say you are wrong, but in this case, you are not pointing fingers at the right direction. 

This thread and this discussion wouldn't exist in the first place if the user in question in OP was making constructive posts.