This post on referral programs got me thinking about the 2015 Green Industry Benchmark Report, which found that most green businesses get their new sales from word of mouth/referrals. Yet few green businesses have actual referral programs. So my questions: 1. How do you get your customers to refer their friends to you? 2. Do you incentivize them? If so, how? 3. Does it work? What activity do you find generates the most referrals? 4. Any advice for someone who's looking to start a referral program? Thanks!