Debates about any topic are acceptable, as long as they don't lead to flaming.

[Ming-Yan]

I think it all leads down to the definition of what spam is.
I suggest a few examples of what spam is in the rules post.

This is the dictionary definition:
"Send the same message indiscriminately to (large numbers of recipients) on the Internet."

That means the same exact message over and over. Not the same topic over and over. Due to this definition in place, the problem is the Moderation, Jacob_, and Kieron's definition of spam.