Mostly just the overuse over here. At least half of my teachers would use it for their notes and it just isn't a good font for that. The fact that it has basically ascended to meme status doesn't help either
Yeah, all my primary school teachers had literally either Chalkboard font or, most prominently, Comic sans. Literally EVERY single worksheet and digital file with words that we saw in class had comic sans..
What are "Rank Colors"?
I'd imagine it's just a way to distinguish between regular players, moderators, admins, developers, etc.
Correct. It's just coloring player names based on admin or backer.
So does the chat being "global" also include being able to talk to Plaza players while playing a gameworld?
Yes, you can talk to people playing game worlds.