I spent many, many, many, many hours of my early internet life at LamdbaMOO. Many posts of material could come out of that, but for now I’ll just highlight one important lesson I learned. Straight from the help file that’s still there today:

When paging, just page the question. You don’t need to start with “Can ask you a question?” (Answer: you can and you just *did* — this is an example of a real-life courtesy that actually becomes counterproductive when translated to the MOO; if one sees an actual question, it is possible to deal with it relatively quickly, whereas if the page is merely a “mind if I interrupt?”, time is lost waiting for the actual question to appear).

It’s a great lesson I learned 15+ years ago today, and one everyone who uses IM should keep in mind.