Population of servers. [Need help]

hey guys.

just wanting to know a question which i need to know in order to bring more traffic to my server.

my question is how can servers get so much people.... is it because they posted grate heaps of info and made such good detail of an server?

my main question is:

what do good servers require?

long time posting?
offer good ranks?
make special features?

any of those?

if you can give me all good information about how i can make loads of people come to my server. it will be good.

cheers if you can help