Did you know that your Google AdSense ads won't show up for Kindle Fire users? Don't you find that interesting? The Kindle Fire runs Google's Android OS but when you try to view AdSense ads with them, you won't get them.
A Google AdSense Help thread has reports from AdSense publishers and those advertising using AdSense that the ads do not render on the Kindle Fire.
I snapped a picture using my iPhone of the iPad next to the Kindle Fire and showed how the iPad loads the ads but not the Kindle Fire:
Chris from Google said in the thread:
Thanks for posting about this here. I will investigate and get back to you as soon as I can.
Forum discussion at Google AdSense Help.
