eReader
I love ebooks, but I didn't buy a Kindle. And I'm happy about that decision because my Galaxy Tab allows me to purchase digital books from Amazon.com and read them using the Kindle app (see Figure 6 that shows Teach Yourself Flickr in 10 Minutes). What's even better is that I also have the Kindle app on my iPad and laptop, so I only have to purchase the ebook once, but I can pick up reading where I left off reading on any of my devices.
There's also an app for Nook for Android that will allow you to read ebooks purchased from Barnes & Noble (its ebook reader is called the Nook).