Having been a moderator on another forum, I have two definitions of spamming. The first is what you guys have defined as spamming. I call it 'commercial spamming'.
The other is a deliberate attempt to flood the BBS with insulting, offensive, or just plain annoying messages. I call this 'trolling spamming', as it is the work of trolls.
Believe me, we used to have a lot of trouble from certain idiotic trolls who used to post nasty or pornographic images repeatedly, ruining the forum for everyone else. I treated them with the contempt they deserved.
Of course, it wasn't just shock images they posted. They also either spammed text (like "YOU LOSE I WIN YOU LOSE I WIN YOU LOSE I WIN", etc, showing the depths of intellectual capability of a persistent troll) or smileys, particularly animated smileys.
The Doctor: There's one thing you never put in a trap, if you're smart, if you value your continued existence, if you have any plans about seeing tomorrow, there's one thing you never, ever put in a trap... Me.
-Doctor Who: The Time of Angels