Apple Inc. announced its fourth quarter earnings today, but what do the numbers mean, and which ones should be of most interest to Apple investors and owners?

AppleInsider.com, a Web site that gives its readers the scoop on Apple products, news, and more, looks behind the numbers and glances ahead to what factors should affect Apple's first quarter earnings.

The article examines how the iPhone rebates are impacting profits, what markets Apple will bring the iPhone to next, how much the Apple retail stores are contributing to the bottom line, and more.

Apple is launching its next operating system version, OS 10.5 "Leopard", on Oct. 26th, and it is rumored to be working on a slim and light version of its MacBook laptop.