Sites like Flowtown and Rapportive: How do they work?

Question

Sites like flowtown and rapportive are getting more and more popular. Basically they take an email and return all the social media sites attached to it. Are they just grabbing the info through the API from each individual site (which seems time consuming setting it up for each one) or is there something else?

Thanks

Answer 1

We use Amazon Mechanical Turk.