Send to Kindle for PC

I saw Amazon's Send to Kindle for PC and got very excited. It allows you to send files from your computer directly to your Kindle via a right-click or print option. I have all sorts of PDFs - books, manuals, diagrams, and other documentation that I like to put on my Android Nook. Sometimes I use Dropbox. Other times I plug it in and use it as a USB hard drive. I thought this might take some of the pain out of doing file transfers.

Unfortunately, the fine print bites me:

You can download archived personal documents from your Kindle Library on Kindle Keyboard, Kindle, Kindle Touch, Kindle for iPad, Kindle for iPhone and Kindle for iPod.

Apparently, there isn't support for the Kindle App on every device.