Expion, a Social Media Management System (SMMS) company, specializes in helping companies manage their brand images on social networks, from Facebook to Youtube to Twitter, often relying on partners' APIs to pull of some of their more interesting feats. Most recently, it was chosen by Google as a Google Plus API partner for the brand-focused Pages feature.
“Hey Smitty, I got this guy’s email address. Can you do some digging and tell me more about ‘em? How much does he make? What are his hobbies? Oh, and I want to see pictures of his pet dog too. Can you do it?”
“Yea boss, I’ll get you your information, buckets full of it. I’ll make it rain!”
This is the imaginary old timey gangster context I imagine around the idea behind Rainmaker, its contacts service and Rainmaker API.