2. Advertising
One thing Amazon didn't mention at its event is that all the new Kindle Fire HD models are going to be ad-supported. Yes, ad-supported.
From the company's press materials:
Special Offers
The new Kindle Fire family comes with special offers that appear on the lock screen. Examples of special money-saving offers that customers will enjoy include a $5 credit in the Amazon MP3 Store and a $5 credit for select titles in the Amazon Instant Video Store. Customers will also receive special offers and screensavers from brands like AT&T, Discover and Intel, such as a special offer of a $10 Amazon.com Gift Card when a customer uses their Discover card to purchase a digital product on Amazon.
Whether or not that's a problem is up to you, but when you're dropping $200 to $500 on a device, you deserve to know it's going to be plastered with ads.