Send To Kindle is an application which enables you to right click on PDFs, text and real text files, Microsoft Word docs, and images (including JPEG, GIF, PNG, and BMP files) and, what else but to send it to your Kindle. The documents get converted into Kindle format and are available for your notes, highlights, bookmarks, and last page read data. They are archived along with all your Kindle e-books in the cloud. Transferring data just became easier and more efficient. It will also be available for the Mac soon.
Source : The Verge