If you have great reviews online and written testimonials in a draw somewhere, you've already gained the trust and confidence of some of your customer base. You now need to amplify their remarks to your target audience. You would also like more customers, patients, clients or members to speak highly of you and recommend you. It then goes without saying that if more people knew about you sales would increase and you'd get more referrals.
Over 80% of the buying public go online to look for online reviews before they make a decision. Therefore doesn't it make sense to market your reputation for what it's worth, in as many places as possible? Your website, LinkedIn profile, Facebook page, Google+ profile, the list is endless. It's your review, your video, your chance to shine.