prediction.

[Mike]

Could always use money gained from donating to support creating strategically placed advertisements that will appeal to a group of people who have the highest chance of joining.
In such a case i dont believe needing a rank for people unless for advertisement creators (gfxers and such)

Theres only like a 1000 people playing gunz nowadays, advertising THAT specific is either highly impossible or extremely expensive. I'd say start with social media, its free anyway.