I use Amazon for many of my entertainment and technology purchases, so you could probably call me an Amazon fanboy (I also use the Amazon MP3 store and own a Kindle DX). I love this app, but for more than just the convenience of being able to shop on the go - this is the application that showed me how technology can lead to consumer empowerment. I was browsing Best Buy recently and was looking for a bluetooth headset. I fired up the Amazon.com app and used the barcode scanner to compare the best buy price with the amazon.com price, and amason was $25 cheaper. Twenty-five dollars! I couldn't believe it. My brother was waiting in line to buy a cheap pair of $30 headphones. I scanned the barcode and Amazon was selling them for $15.