"Growth hacks are trendy, but rarely described in actionable terms. Andrew Dumont's post on Moz blog "How to Grow: 21 Tactics To Acquire Customers" is one of the few that managed to do just that."
In below infographic (plus slideshare), the folks at referralcandy have applied a fun visual treatment to Andrew's excellent article, and beef it up with even more relevant stats and case studies.