Amazon changes Kindle personal documents fee structure

I just read on Gear Diary that Amazon is changing the fee structure for sending personal documents to your Kindle device. As clearly stated on the Amazon Kindle blog the old fee of 10 cents per document is now changed to 15 cents per megabyte. This actually may result in lower fees if you have been sending smaller sized documents to your Kindle. I primarily use my Kindle for reading ebooks and rarely have a need to convert documents using their wireless fee system.

You can still download personal documents for free by sending attachments to name@free.kindle.com and then transferring them to your Kindle via the USB cable.

Does this positively or negatively impact the way you send personal documents to your Kindle?