This one I "allowed" because they have a facebook page to serve as communication outside of the game if you click their "like and share" image somewhere. I agree it's hard to find and server starter should put more time into thinking how are players going to find help and basic information if they are not in the game yet.
There are many that sign up with their control panel link that is only good for registration. But without a download link, forum/fb page and basic rates information I really don't know what they are thinking when they sign up their server because nobody can possibly get on it.