How do RSS feeds work?

Related questions

1. Do people still use RSS?
2. Why was RSS banned in India?
3. What is an OPML file outlook?
4. What does RSS subscribers mean?
5. How do I get a RSS feed?
6. How do I get my blog on Feedly?
7. What does Feedly mean?
8. What is Really Simple Syndication RSS and why is it helpful?
9. What is Feedly Pro?
10. What is the purpose of RSS feeds?

Tags

1. #directories
2. #short
3. #really
4. #simple
5. #submitted
6. #after
7. #content
8. #interface
9. #feeds
10. #within
11. #reader
12. #allow
13. #updated
14. #aggregator
15. #files
16. #subscribers