can somebody please inform me of the purpose of this spiffy green alien-monster which i now observe under my good name?
or did see, at least?
That's an Easter Egg pip. Occasionally, someone will get one for certain post levels.
In this case its a reference to Douglas Adams for reaching 42 posts.
I was wondering about that. WTC? Naaani?
WTC = Welcome to Canada = Wootac.
WBTC = Welcome back to Canada = Woobatac (and variants) is sometimes also used.