Steve Jobs reports today that Apple is selling an iPad every three seconds.

This is a pretty urgent moment for my friends on the Kindle team, so here are some bonus thoughts on pricing, business models and competition:

1. The paperback Kindle. Don't worry about touchscreens or color or even always available internet to download new books. Make a $49 Kindle. Not so hard if you use available wifi and simplify the device. Make it the only ebook reader in town.

2. The Kindle as razor. Buy any 8 bestselling books on the Kindle ($10 each) and get a paperback Kindle for free.

3. Kindle of the month club. In the 1950s, the most powerful person in all publishing was the guy who chose the book for the book of the month club. It didn't pay the author glamorously well, but if your book was chosen, it guaranteed people would talk and it would become a bestseller.

Sign up to get a Kindle book of your choice every month for 12 months and get a free Kindle. Amazon presents you with ten book choices, and since the cost of delivering it is zero, there's plenty of margin for all…

4. Let publishers, leaders and corporations push PDFs and chosen books directly to their tribes via the Kindle. For example, I could put Kindles in the hands of the 1,000 service techs of my ventilation company and they'd see the new service manual daily. Or an author could create her own version of a book club, collecting a monthly fee and pushing the latest book directly to people who want to read it. Simpler still, how about letting me gift a book directly to anyone I know who has a Kindle? (thanks Lisa, for this idea).

The only way to get authors and publishers to embrace this device is to sell 20,000,000 of them. You either become the best and only platform for consuming books worth buying or you fail. And the only way to create that footprint in the face of an iPad is to make it so cheap to buy and use it's irresistible.

I saw a two-year old kid (in diapers, in a stroller), using an iPod Touch today. Not just looking at it, but browsing menus and interacting. This is a revolution, guys.