Over at Macworld, TidBITS editor Glenn Fleishman explains Apple’s curious statement that GPS positioning would take minutes without its secret sauce of Wi-Fi network and cell-tower location data. Apple (and other mobile device makers) supplement GPS with several clever techniques to get a faster fix. follow link
Just Show Me the Pictures!
Do you ever find that you don't have time to read those long email missives from Aunt Carol, but really do want to see the photos that she has lovingly attached? In Apple Mail, click the Quick Look button located in the message header. You'll get an easily browsed view of just the attached photos, and you can even add them to iPhoto, if you like!
How the iPhone Supplements GPS