Our family continues to share a group of Kindles on the same account, allowing all the books to be loaded and unloaded into any of the Kindles at will and for free. That is fun.
I didn't understand that the email addresses for each Kindle were for emailing an attachment into a Kindle but not for sending a message directly to it. Now I do understand that. I just emailed a silly picture of myself into my Kindle and sent the same thing to Tom. We will see what he thinks of it.
The software update for the Kindle 2 allows books and other items to be put into collections. Just the change I need. I plan to have 1 to 3 books in my read-now collection and not add or delete anything to that set until I am finished with those items. Much like I keep a hot shelf of the more currently worked-on books in my office.
I do continue to find paper books of interest, such as "Cognition in the Wild" by Edward Hutchins about the distributed knowledge among modern seamen handling a giant ship. His interest is in how people share their knowledge and coordinate a complex task when no one has all the needed knowledge or hands. That book and several others have been borrowed by a library from another library or purchased. Trained librarians are expert at doing that sort of finding and borrowing.
Getting a book one wants for a low price and in about a minute continues to be a very attractive feature of the Kindle. Maybe the main attraction is that 255 books take up no more space than the Kindle, weigh a total of 10 oz. (!) and never need dusting.
I am a book luster and am always finding new books I think might be worth a look. As a grad student, I found that looking at the beginning, table of contents and a sample or two from the middle can often increase my interest or drop it. Amazon.com is super at tempting me and supplying other books that might be of interest to a person with my set of choices. A recent update of my favorite browser, Firefox, stopped some of the Amazon page buttons from working but they work fine in Google's Chrome browser. So, I switch to it when I plan to be on the Amazon site for a while.
Amazon allows multiple list creation and that has been a handy way for me to keep a record of books and Kindle books, a separate list I made for myself, that I might want to get back to sometime.