Alternatives: other downloaders like 4K Video Downloader, JDownloader, or even browser extensions. Comparing features could be useful.

Use cases: personal archiving, educational purposes (though that's debatable), offline access. But again, I need to balance with the legal side.

Need to ensure the content is accurate. If I'm unsure about something, I should state that it's uncertain or require more research. Also, avoid technical jargon where possible for clarity.