Amazon streamlines its ecosystem while continuing the assault on Dropbox:
Starting today, all personal documents that you have archived in your Kindle Library will be available to access, delete, organize, and share from your Amazon Cloud Drive. You can see these documents in a new “My Send-to-Kindle Docs” folder alongside all of your saved content such as photos and personal videos. Also starting today, new documents that you save to the cloud with Send to Kindle will be stored in their native format (e.g. MS Word, TXT) so you can access them anywhere from Amazon Cloud Drive.