1. scribd.com
2. docstoc.com
3. slideshare.net
4. crocodoc.com
5. Issuu.com
6. docshare.com
7. wepapers.com
8. myplick.com
9. powershow.com
10. slidesix.com
11. empressr.com
12. filesave.me
13. fileden.com
14. wikiupload.com
15. slingfile.com
16. zippyshare.com
17. filesend.ca
18. adrive.com
19. sharesend.com
20. smashingapps.com
