Mountain Lion offers a new feature called Power Nap, but since it’s limited to only a few recent laptop Mac models, most people probably haven’t seen it. In short, Power Nap enables supported Macs to wake up briefly to back up via Time Machine, check for email via Mail, receive new messages in Messages, and update iCloud-related data, including calendar events, contacts, reminders, notes, iCloud documents, and photos in Photo Stream. Over at Macworld, our friend Dan Frakes explains just what Power Nap can do, how you use it, why it works on so few models, and more. follow link
Mighty Mouse as Application Switcher
Looking for an easier way to switch between multiple applications? Within Keyboard and Mouse Preferences under System Preferences, you can configure the scroll wheel to act as an Application Switcher. Press the scroll button to bring up Application Switcher, scroll to toggle to the application you want, and hit the scroll button again to switch. You can also double-click the scroll button to quickly switch to the previously active application.
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Dan Frakes Explains Power Nap