How can I defend and/or encourage white space as an effective design element?
At the company where I work, every day, there are discussions about "how to fill the screen" in our applications.
I always position myself in favor of minimalism, keeping places blank to focus the user to the actual contents of the application.
In contrast, some coworkers say that the application ends up being too "empty" and too "white" and that the customer will not want to pay for something "empty", and always insist to put shadows everywhere, logos and pictures in various places and etc... This, in addition to polluting the application, use the valuable space on the user's screen with useless information.
It is noteworthy that make Web applications (RIA), and that usability is critical for everyone here, however, not everyone has the same concept of usability here, that's a problem.
So I'd like to know which option is best, and if possible, a good reference for or against it.