I've started messing around with #Nym over the last 12 hours or so, and it's been great fun jumping into different channels and seeing what others up to.
As many have observed, this brings us back in many ways to the wild west days of IRC, meeting random people from all over the world. It can get a bit crazy at times with the spam (such as a Xi Jinping promoter) though.
In many ways, it's not just the wild side of the old days, but it brings back the simplicity of IRC as well. The fact that discussions are mostly text-based is a huge perk. The regional rooms are interesting, but it can be a big confusing if people don't know how to access the map codes and end up taking over this or that region's channel.
If I could offer any critique, it'd be some kind of way to easily hover over the regional channels' codes and to get a little pop-up with a rough description of countries that are included in that zone. It'd beat jumping back and forth all the time!