Dan and Marco discuss keyboard-screen imprinting, Google's odd TV ball, Sirius and Pulsar, the difference between copyright and patent infringement, Instapaper's price-change results, the iPad 1 installed base, the Nexus 7, Apple's Podcasts app, why Apple probably won't offer paid podcasts, Facebook's native iOS app and why web companies need to treat mobile apps as a first-class platform, Twitter's ominous threat to client developers, and Tumblr's pinned posts.