Books are getting smaller

I've just finished reading this book almost entirely on my phone! I've got the Kindle App on both the phone and the iPad and downloaded the book directly and had it on both devices. The App actually syncs your last reading position so whichever device you pick up it will take you to the last page you read.

What I found surprising was that even on the phone the font size was easily readable and was very convenient for reading on a crowded tube on the way to work.