Excellent idea posting the CS number for you Kindle in various locations!! I went through a time of needing CS and found out the value of having the Kindle CS phone # as opposed to the Amazon CS phone #. I spent almost 15 min with an Amazon CS rep who was very kindly trying to help me with my issue.... and at the end of all of that.... he told me I would need to be transferred to the Kindle CS dept and gave me their phone #. I hadn't thought to put the Kindle CS number in my cell phone but I'm going to correct that right now. Thanks!!