So far I like it!
I noticed a lot of people looking at it. Many people asked questions about it. From a conversation piece it definitely does that. It made me nervous to get the attention, but I guess people are curious creatures.
It took me awhile to get used to it since I am used to reading paper books.
Usage is elegant. The previous and next page buttons are nice. They designed it so that the previous page button on the left side is slightly higher for your thumb.
Text size is changeable in the extreme, so if you have problems seeing the text in books the Kindle helps with that.
Text-to-speech is available for every book in male and female simulated voices. I was actually shocked at how realistic the voices are. Pausing at commas, pronunciation, and others linguistics work well. However after ten minutes I had to shut it off. The voice is very dronish and monotone. Needless to say if you prefer audio books Kindle’s text-to-speech feature won’t replace them.
I had lots of PDF, TXT, and DOC eBooks that I figured out how to convert to a format supported by Kindle. The first option was to email the file to my @kindle.com email. Amazon converts the file on their servers and a few minutes later it shows up in the list. The other option is to download Mobipocket Creator. I REALLY enjoy this freeware app, and prefer it over the Amazon @kindle.com conversion method. I did notice some bugs with the app such as quotes and italicized text didn’t convert. But for the most part it did an excellent job.
I bought a couple books from the Kindle store from my Kindle. Amazon uses something called whispernet that piggybacks off Sprint cell phone technology. There's no cost the use the service since the cost is built into the price of the Kindle plus books.
I wish the Kindle had a backlight so that I can use it at night. Reading in a dimly-lit room is hard, but I guess it’s no less different than reading a paper book in a dimly-lit room. Reading the Kindle in day light is really nice and surprisingly comfortable on the eyes! There’s a bit of a problem with glare but not too bad. If you wear sunglasses glare is all but eliminated.
And to answer your question Orwell yes there is a search feature available on every page just like Firefox. The search will scan all books and return results for the word or words. Then you press the button and it jumps right to that page in the book.
I can turn off the device and turn it back on and it will be on the page. If I bookmark a page and return to the listing, I can click on the book and it will return me back to the bookmarked page.

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A Proud Witness of Jehovah God (
JW.org)
Revelation 21:4 "And [God] will wipe out every tear from their eyes,
and death will be no more, neither will mourning nor outcry nor pain be anymore.
The former things have passed away."