There are risks involved. Letting your marketing speak in the customer's voice instead of your own can mean that sometimes your intended message isn't communicated as you would prefer. But if your marketing is spoken with the customer's voice, it will be more authentic and will better resonate with your target market.This is the part that people often forget; give your customers power and tools to talk about you, and they might say things that aren't what you would have chosen. Still, for many marketers, the power of motivated customers outweighs the risks. It also, I think, keeps companies honest; if your customers start saying things you don't like, there's a reason, and you ought to be thinking about that.