I’ve pasted some (hopefully commented out but still visible html) below that is the login screen for a game I occasionally play, it passes the open ID from your google or yahoo account to the game. Much like logging in with facebook. I think twitter also does the same (based on another game I used to play).
Given you have a google engineer on board I’d have thought getting the google ID system hooked up ought to be easy enough - and then you couldget yourself a google+ profile and probably post updates and so forth to a circle of all the eterna players - which they could then potentially share increasing the potential player base.
[Mod Edit: Removed code for ownsership concern, provided little benefit beyond specific example anyways]