Is this the only space where the term "p-spot" is used?

People don't normally talk about that kind of stuff in the open, you'll be learning a lot more here on Eden!

No, it's pretty universal. I would say it's almost as common to referring to the g-spot for females.

I've heard it plenty of times before I came to Eden. But it's probably because most of my close friends are all gay males and that's a pretty big deal to them. It is a universal term though.

aka male g-spot

It's common enough in any place that mentions the prostate in a sexual manner. It's probably less common in places that speak of the prostate in medical or lay terms alone.