Marco Arment shares the thinking behind the design of his upcoming Instapaper App for the iPad. His design philosophy has always been to make something for himself to use, and in that vein, he writes, "an iPad without native Instapaper Pro is not a device I want to own."
I absolutely agree. As I've said before, I think that Instapaper will be the iPad's killer app. As much as the Web can do multimedia, the thing I do most is read text. Instapaper lets you turn the entire web into a cleanly-designed newspaper with just one click of a bookmarklet. That, on a handy tablet? It'll be the first app I install.