Can you use images from Flickr?

Related questions

1. Is Flickr free for commercial use?
2. Is Flickr good for photographers?
3. Is Flickr still alive?
4. How do I make my photostream private on Flickr?
5. What is a posting on Flickr called?
6. Does Flickr have a limit?
7. What is explore on Flickr?
8. Is Flickr secure?
9. Is Flickr the best photo sharing site?
10. Does Flickr exist?

Tags

1. #keyword
2. #doing
3. #click
4. #original
5. #search
6. #commons
7. #image
8. #picture
9. #behind
10. #legally
11. #allowed
12. #flickr
13. #creative
14. #license
15. #every
16. #select
17. #backlink
18. #provide
19. #return