Hey Danielle
I work for a site called
Ledula.com that generates leads via word-of-mouth – it’s registered, legal, etc.
It brings you leads by getting your clients to recommend your service to their friends – so it allows your clients to add your contact details to the site, rate and comment on your service and then share your details with all of their Facebook friends. (So the people on Ledula are more likely to use you because their friends have recommended you.)
Let me know if you want more information about it
Joanne
PS: Forgot to mention that it mainly deals with home service providers - don't know if that's your industry?