If receiving sales leads from people familiar with your services is a key source of new business opportunity, have a look at ReferralKey.com, a site that helps you exchange referrals with professionals you know and trust. Sign up is free. Use Referral Key to generate sales leads and to strengthen and expand your business network. The site provides you with detailed reporting tools to track and analyze your referral partnerships and customize your program for maximum effectiveness. If you are a professional looking for new clients, you can list your business on Referral Key.