Is Selling Steam Accounts legal?

Related questions

1. How much profit does steam take?
2. Is Steam OK to download?
3. How much does it cost to publish a game on Steam?
4. Is there a way to sell games on Steam?
5. Is ocean of games virus free?
6. Are there any free games on Steam?
7. How much does Xbox Live cost?
8. Do free games count as games on Steam?
9. Can I sell games from my Steam library?
10. How long is the Steam summer sale?

Tags

1. #their
2. #should
3. #issue
4. #anyone
5. #agreement
6. #selling
7. #steam
8. #therefore
9. #account
10. #would
11. #still
12. #illegal
13. #password
14. #using
15. #legally
16. #username
17. #details