With Instapaper, I can take a few months off. I can't stop publishing 'The Magazine' for two months and work on something else.

Apple already had everyone's billing information from iTunes... you could buy things just by typing in your password... That, for the first time, brought very, very easy payment to the modern software world. That, more than anything, is why there is a business for paid apps.

People want to download publications quickly and read them without cruft. Publications that started in print carry too much baggage and usually have awful apps. 'The Magazine' was designed from the start to be streamlined, natively digital, and respectful of readers' time and attention.

Making a product better often requires removing features.

One reason I love the Kindle, more so than the iPad, is that on the Kindle you can't do anything else but read. It's the best, because it does the least. It doesn't even show a clock.

Instapaper does support paywall sites. I have a list of them, that when someone saves something it sends a copy of the page as they are viewing it only to them. If you subscribe to a paid site, you can save the content. I'm not really touching the money.

I've worked with many large and small publishers, and nearly all of them love the value that Instapaper provides to their readers.