I really belive quality > quantity here.
I've never wanted to join a server where people spammed it somewhere. If I did join a server it was because someone took the time to make one or two good videos about the server, you know, ones with commentary just like Big Chris' videos. If someone puts time and effort into making something for others to see, and it's about the server. I'd say that's at least 13513613 times better than whatever spam people make for other servers.
This is the god-knows-how-many-th post about emps dying, instead of whining about it, do something about it.
Tell your friends to join, make good videos for the server, write guides, make others feel at home when playing the server.
Due to many different factors, all other private servers are sort of 'dying' as well. This does need to be adressed. Ever since the release of OSRS private servers have dropped, this happened even more when f2p and bonds were released. Emps may need advetizements, but it needs qualitative ones.