The folks at The iPhone Blog have gotten together a bunch of nice screen shots of this app (you usually only get to see 4-5 pics when viewing at the app store either through iTunes or your own iPhone) allowing you to judge for yourself whether this will finally be the thing which makes you come over to the dark side.... Head here to see them.
For those of you who use, exclusively, a PayPal account to cover your Amazon 'can't live withouts', you'll need to find some other way of doing things because they don't - yet - take PayPal, despite your having paid thousands of dollars to them in that manner previously (written from experience!). In any event, if you've done that much Amazon business, you're probably safe giving them your credit card unless your wife would finally figure out how much money you've been tossing at Masonic books and raspberry caramels!
The Kindle selection for certain types of reading can be limited: trying to find books on (UGH) Vista, for example, yields very little. But for lots of other things, there's a whole raft of choices. For those of you who want to check tech-type books, there are two other alternatives as well: if you've got the book on a CD (the indispensable Excel 2007 Bible by John Walkenbach, for example), you can upload the PDF format to your iPhone. Alternatively, if you've purchased the ability to read the book online thru Amazon, then you can just do that using the Safari browser. Lots of choices for lots of reading needs.
There's one really intriguing feature in this FREE app that's often overlooked: Amazon Remembers. If you see something that you want but can't identify precisely (a lawn chair, for example), simply use your iPhone to take a photo of it and send it along to Amazon. They'll search their database of a gazillion product photos and recommend options for you. It's really an amazing thing and multiplies the usability of your iPhone tremendously. Save time, money, and energy (and even paper and ink!) when locating that 'perfect gift' you've been thinking of sending to me. I'd be remiss in noting that it's really not cool (in my opinion) to use this for comparison shopping. Unless you're being treated like trash from some smug salesperson (Hello, BestBuy #463 salesman who lost a $1.5K sale last Friday night because "It's such a hassle." to unlock a laptop so I could try the keyboard at a lower angle.), you really should seriously consider buying from the folks who've made the investment to have stock locally. Here's an editorial from the great website ars technica on that very subject.
Enjoy your reading and your iPhone, Brethren.