I recently came into the private server scene, and while having options is nice, there are almost too many options. More often than not, I'll create an account on a server that interests me only to find out that it's a ghost town and that it doesn't really offer anything over the official servers. There are literally hundreds of them, which is far too many for one person to play on and sort through.
Are there any servers out there that you find particularly special for some reason (whether it be a decent/high population, great custom content, or something else)?
I --DO NOT-- want this to become an advertising thread. I intend this thread as a way for people to find the truly great private servers - for people to be to find the "gems in the rough" so to speak. So please, only post a server if you are recommending it with all your heart and not just plugging for your server (for example "xxserver has a great community, its very very small but should grow" won't work).