Guild Wars 2

Is it possible for the instigator of spam in chat to get banned?

For example, the Instigator says they will give 100g to anybody who guesses a number between 1 and 100,000 and if they guess the right number they get the money. The result being a chat that is impossible to use because it just becomes flooded with numbers.

Is being the cause of this spam a ban-able offense?

Why would you even consider doing it if you know what will happen afterwards?

Why player driven content such as in-chat quizzes or guessing numbers etc should be bannable offense? That makes no sense. If you dont like it – dont read it. You can always create separate tab for /map chat.