Off the top of my head, maybe something like a milestone reward for referrers and referees if they actively use the site for a month, year etc. For some reason I'm thinking "new hat type" along with this.
Something extra if someone you invited founds a new territory?
I like this! Maybe it can forge some kind of commemorative bond after enough time. hmmmmm
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Right, if we're building a town, we want most to come and stay, and share their talents.
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A bowler hat for referrers that bring productive stackers.
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