I figure it would be ok, you can do it from within the game system as an addon, like follow strobing which uses delays.

The only reason Blizz would ban the addon would be for spamming and they would more than likely ban the user than the addon (IMHO, not fact).

Way back when I first wrote Jamba, I made module called "Jamba-Crazy" where you chose a mood for your toon and the mod would /emote or /say on your character every so often an appropriate emote/say, for the mood you set for your toon. I never released it for the fear of complaints from abuse.

Anyways, I could write something for you, but I need to get some Jamba bugs fixed first and as usual life is real busy, so I don't want to promise anything.