No Sign-up Necessary (the strikethrough method)

Two apps, Posterous and SignApp, have a novel way to communicate how easy it is to start using their product. I call it the strikethrough method.

It’s a simple feature: the designers simply cross out one of the normal, expected steps of getting started with the service. On the home page of the site they show the usual, expected step of creating an account and then put a red line through it. Easy....