What is a Do Not Track request with browsing traffic?

Related questions

1. Which browser does not track?
2. Can you track incognito browsing?
3. Do you have to pay for Google Chrome?
4. Can incognito browsing be traced?
5. Is ghostery open source?
6. Is Chrome incognito safe?
7. How do I stop Google from tracking me?
8. How do I block a tracker?
9. Do not track Chrome on or off?
10. Can phone company see your Internet history?

Tags

1. #include
2. #track
3. #optionally
4. #headers
5. #indicating
6. #content
7. #information
8. #whether
9. #browser
10. #items
11. #header
12. #honoured
13. #extra
14. #request
15. #using
16. #requests
17. #sends
18. #tracked
19. #called
20. #control