A customer who refers one friend who stays for a year. A customer who refers five friends who leave in a month. The quality of referral matters more than quantity. In my third year as a 

Unlimited bandwidth" sounds great. It's also impossible. Every source has limits. Offering unlimited encourages abuse. In my first year as a 

Source health. Not daily. Not weekly. Hourly. A source that fails at 8pm and recovers at 9pm will generate complaints. You need to know before customers tell you. In my second year as a