Probably the most famous referral programs as of today
![](http://www.growthjam.com/wp-content/uploads/2016/10/Untitled-3.jpg)
« Get more space » value proposition strongly resonates for the user
![](http://www.growthjam.com/wp-content/uploads/2016/10/webshadow5-1.jpg)
Update users on the status of their invites
![](http://www.growthjam.com/wp-content/uploads/2016/10/webshadow3-2.jpg)
A dashboard also helps users to keep track
![](http://www.growthjam.com/wp-content/uploads/2016/10/webshadow-1.jpg)
Rule #1: Always update users on the status of their referrals
![](http://www.growthjam.com/wp-content/uploads/2016/10/webshadow4-3.jpg)
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