iphone tips and tricks

Given the closed eco system that surrounds apple iphone, iphone owners are dying to find out ways and means to get the best of thier iphone by some means or the other. Here are some links that might be helpful for such users:

1. Macworld reporter John snell's article on ipone syncing tricks
2. NY times reporter David pogue's list of UI tips and tricks
3. Tuaw's blogger Erica sadun's list of safari browser tips and tricks
4. Zolved.com's top ten tricks on iphone (general)