WHY FEATURES DON'T MATTER ANYMORE: THE NEW LAWS OF DIGITAL TECHNOLOGY

Some good comments about why more features is bad. This article itself covers a lot of ground--why simple stylistic tools like iPod succeed--why simple features define your product. I like #5 and #6 especially when it comes to design of a complex feature set in a product. These are rules to design by.

Also see every time you add something you take something away