I agree.
All the marketing people are doing on FB and Youtube is good however I believe the vast percentage of solid growth comes from one person showing their earnings to another. This is where the proof is the best selling point. People either dont believe it or dont want to hear it...yet when you show them, no longer are you simply blowing smoke.
Of course, their next thought is if he/she can do it, so can I.
Do you believe Steem would benefit from referrals?