http://steamcommunity.com/groups/gbmmoc  
 
I made this group on Steam because the in-game chat options are terrible. If you open a chat in game with someone you suddenly can't move with WASD and have to move with the mouse instead. So, here is a group chat room for you all to use if you want to talk about anythign Runes of Magic-y. 

Wouldn't it be better to just make a private channel in game?

Joined for sure....
Everyone get in their!... well if you use steam.. else.. get it!

 It'd probably be a good idea if most people joined, that way they know when exactly we're gathering.That seems like a perfect use for this.

Yeah, you can also post events and news which seems like a good way for people to get updated as it shows up on their steam page which, I imagine, people check more often than this.