Is creating a database from scraped data and use it to monitize my app is okay?

Which one is best for scratching the web ReactPhp, js, Python?

Which one could be better to do scraping the web. There are more than 10 million pages and must be fast. It can take 1 month with php curl. I'm waiting for your help

Is real-time scraping of facebook group posts possible?(Node.js)

I am a part of a couple political facebook groups (all closed groups) and I've noticed some anecdotal truth to the "fake news" hysteria. But I want proof. The Graph API doesn't allow pulling post data from closed groups - so I was wondering if a solu...