i spent! wholeheartedly!

arrived in my inbox, 7:57 AM:

Greetings from Amazon.com.

We thought you'd like to know that we shipped your items, and that this completes your order.  Your order is being shipped and cannot be changed by you or by our customer service department.

You can track the status of this order, and all your orders, online by visiting Your Account at http://www.amazon.com/gp/css/history/view.html

There you can:
       * Track your shipment
       * View the status of unshipped items
       * Cancel unshipped items
       * Return items
       * And do much more

The following items have been shipped to you by Amazon.com:

the countdown begins! :-D

just a question on amazon...

i was surfing amazon and enjoying the features and reviews. i really appreciate how they give recommendations based on the titles you surfed, and the list that goes under the heading "customer who bought this book also bought..."

i especially love clicking on "add to my wish list", in hopes of some loved one finding my wish list and surprising me with my wanted items. hehehe.

scrolling down some more, i find the usual "editorial reviews", "product details" and "look inside this book", which lets you browse the table of contents and back cover, as if you were in a bookstore. coolness!

but then i come across the next heading called "citations", and under it reads:

93 books cite this book.

huh???

does this sentence have a hidden meaning, or did any of these five words recently develop brand new definitions that i wasn't aware of that i couldn't understand it?

maybe someone can explain it to me?