1. Bucketlist.org
2. Free Rice
3. Spreeder
4. Duolinguo
5. Food Gawker
6. Camel Camel Camel
7. What Should I Read Next?
8. UnPlugTheTV
9. Sporcle
10. Ted Talks
11. University of Iowa Historical Letter Transcription
12. Justin Guitar
13. Galaxy Zoo
14. Skills For Change
15. Coursera
16. Word Frequency Counter
17. Do Nothing For Two Minutes
18. The Wiki Game
19. Code Academy
20. Caffeine Informer
21. Dancing Orca
