When people say good things about you, it gives you instant credibility. Think about th

While you might not have Oprah recommending your business, you do have satisfied clients that send nice emails, recommend you to others, product reviews, seminar feedback, awards, or perhaps a customer satisfaction rating system. In other words, material for word-of-mouth.

Don’t just announce your award, let everyone know why you were chosen, something like “expert panel for fishing chose us as the Number One Online Store for Supplies, here’s what they said!" Include the names of the judges and link to their web site.
The challenge is getting the word-of-mouth out in front of your next customer when they are ready to buy. You won’t be able to keep the sold out sign or award announcement up forever. You can, however, put it in your header with a link, banner, ads, and facebook or linkedin profile with links.
Remember, other people's praise is always better and far more powerful than what you say about yourself.