Specifically, it relies on Google Trends, Google News, Google searches, Amazon searches, Twitter searches and YouTube searches (for now!)
We also have a partner for e-commerce data (usecart.com)
How do you get access to Amazon searches, google searches etc? do you have to pay for those?
If you are curious, at https://rubini.solutions you can check out my other SaaS products =)
I've always wondered about building a career with scraping, but never got around to it. One reason is the legality of scraping - big sites like Craigslist have gone after (and shut down) smaller projects. I believe priceonomics (YC company) built a big business with scraping.