Then that really diminishes the negative association of the word SPAM.
SPAM is unsolicited garbage* (gold sellers, guild charters stuck in your face, people asking you to tank Kara every 5 minutes, etc.). These are things that someone else is doing for their benefit, that you shrug off the first time or two, then get annoyed with, and eventually angry about.
But useful information that you just don't want to see -- eh, that's just a little noise. You know it has a real purpose, and isn't trying to be annoying, but you want some extra filtering to reduce the noise. If it were excessive (like an old bug in another addon that kept repeating a message every 0.1 seconds until you quit) - then the end user might call it SPAM just because it's repetitive, but really should be called a bug (it was fixed quickly).
When Anarl said SPAM, my first guess is that we were sending out a message that annoyed other users somehow.
For options, it should be something like "enable chat feedback" or "show disenchant results in chat". Calling it SPAM makes it sound like it would never be useful, or is actually intended to annoy.
*Or a registered trademark of Hormel Foods, LLC enjoyed by school children everywhere (and Hawaiians) :-) PS. If you haven't seen spam.com - they don't take themselves too seriously, but it needs high bandwidth.
I understand your point. But as far as I know "chat spam" is the common parlance for addon output that is excessive or otherwise undesirable to the installing user as well. If you want to make this one of your important issues, by all means, fight the power. You will probably need to get into dev channel and make your case, though.