JavaScript (via Node.js) is known for its performance in real-time applications, thanks to its non-blocking event loop.

YouTube has an API that provides access to video details, likes, comments, and more without scraping.

Facebook has strong anti-scraping measures, so consider alternative methods like APIs or using third-party tools.

Sometimes paywalls hide content but still load it in the HTML—inspect the page’s source code to see if the data is there.