“Crowd sourcing” is when you rely on the “wisdom of crowds”. The idea is that if many people think that a business or service is good, then it probably is. You might also call this “stranger sourcing”.
“Friend sourcing” is when you get recommendations from people you know and trust, rather than from strangers. This can be a very efficient way to get good recommendations. More on the reasons why later.
Crowd sourcing and friend sourcing each have their strengths and weaknesses, and are best applied to different kinds of businesses, but are most powerful when used together.
