iPhone
Apple, Apple iPhone Dev, Apple Insider, Mac Rumours,

Android
Android Developers, Android Forums, Captivate Forums, Nexus One Support, XDA Developers, XDA - Captivate, XDA - G Tablet,

Other Mobile Technologies
Blackberry Forums, JiveTalk, Dell, HP, Nokia, RIM, Sony,

Carriers
AT&T, Sprint, T-Mobile, Verizon,

Advice/Periodicals
Boy Genius, Engadget, Howard Forums, My Rate Plan, Phone Scoop,

Shopping
Amazon, Lets Talk, RadioShack, Wirefly,