Macworld Online: Mac news and opinion
Macworld UK: Mac news and views with a British accent
MacUser: Macworld blog with "News, info, and opinion by Mac users, for Mac users."
MacFixIt: Mac troubleshooting site
Version Tracker: Software updates and user reviews
MacUpdate: Updates and special deals on Mac software
TidBITS: With an excellent weekly e-mail newsletter and more
iPhone Central: News about the iPhone, iPod touch and the App Store
Mac OS X Hints: A technical site focusing on OS X issues
Apple Matters: "A serious yet irreverent look at all things Apple"
Accelerate Your Mac: Mac upgrade information
MacInTouch: "The original Mac news and information site since 1994"
MacWindows.com: "The web site for Mac-Windows integration
dealmac: "How to go broke saving money"

Apple: Apple's home page
The Apple Store Online: Buy directly from Apple
Apple Special Deals: Discounts on Apple certified refurbished products
Macintosh Products Guide: Apple and Apple related products
Apple Discussions: Apple hosted discussion forums
Support Downloads: Apple software updates
Tech Specs: Technical specifications for Apple products
Manuals: Manuals for Apple products

Mac Sceptic: A look at Mac technologies and products to identify what's hot—and what's just hype
The Joy of Tech: The funny side of technology
MacRumors.com: What may or may not be in the offing for Apple