like are they familiar with the name
I think that’s equivalent to 4. Take a random person, and chances are, they don’t know him. You can reask a different question 5.
To be fair, do most people know any of the previous real-life people who have been mentioned? I barely know the representatives and senators from my state, much less any others. 
- Is he a YouTuber?
- No, he is not a Youtuber.
- Is he involved with that loud and annoying crowd that plays Go?
- No, I expect he knows what it is, though I could be wrong: he’s worked with people who are familiar with it, but I don’t know that he plays.
Don’t read too much into that; he is not known for go and just about anyone can know someone else who knows some arbitrary thing.
That’s a great clue. It doesn’t help me, but it’s a great clue :-). I really want to know who it is now, although I have no ideas.
Both of them have been mentioned by name on these forums before, so they’re not too obscure. But neither is known for go.
Does he travel a lot @Samraku?
- I don’t think so. What he’s known for does not require travel.
- Is he involved in something that has to do with electronics and the internet @Samraku ?
- Yes.
When was he born ?
also it is time to eat my taco 
Is he dead?
-
Yes, he is a researcher / developer.
-
No, he is not dead.
- Is he a person involved in the invention/development of something used by almost everyone (even if they don’t know it, like Linux), yet the person itself is not all that famous?
- Yes.
- Did they develop a programming language or an OS?
- Yes.