Are certificates from udemy EdX and coursera of any worth?

Related questions

1. Who is behind udemy?
2. Does udemy give certificates?
3. Does udemy have a monthly fee?
4. Is PluralSight better than udemy?
5. Is udemy safe to pay?
6. What does udemy stand for?
7. What percentage does udemy take from instructors?
8. Is it worth paying for Coursera certificate?
9. Can I add udemy certificate to LinkedIn?
10. Is coursera no longer free?

Tags

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2. #field
3. #despite
4. #right
5. #certificates
6. #subject
7. #complement
8. #udemy
9. #activeness
10. #worth
11. #specific
12. #online
13. #potential
14. #context
15. #coursera
16. #least