What it does: Announces when a (battle) server has 32 or more players in a steam announcement.
What it doesn't do: Spam announcements. Post any other announcements.
http://steamcommunity.com/groups/WoRHAA
If you don't know your login info or you never use your browser to login to steam you can copy, paste, and send the url in steam message to anyone and it'll create a hyperlink that will open the group in your steam browser so you can easily click to join.
It should help move the server beyond the 45/80 threshold once it gets around 1000 active members. In the future hopefully it'll announce planned events that we know will happen.
Unfortunately steam made it so you can't invite non-steam friends in early August this year. Otherwise it would be simple to grow this. As it is you'll have to join manually and invite your steam friends who play WoR. I didn't know about the change when I started the group a couple weeks later so I let it sit for a bit.
If you want to be an announcer-poster and have any clout whatsoever or are a regular, mature player send me a pm with your steam account. Or comment in the group. I'll be regularly reviewing the group for any abuses (if you post multiple announcements and delete them I see that, too). I ran one of these before for another game with ~3000 members and it works well. It can become a crutch people rely on (only wanting to join a server when they see one!) but I don't think it's a risk until late in the game's lifespan.