How can the iPhone become your handy travel companion? The NYTimes explains. Also, as a bonus, travelers should see our earlier piece. Turn Your iPod into a Travel Guide: 20 Travel Podcasts.
PS One of our readers raised a good point that deserves some highlighting (Thanks Sebastien):
"Turning your iphone into a foreign travel companion could cost you a little fortune because most of these iphone applications need and Internet connection to work. Unless you have wifi in your hotel room, you would have to roam on 3G or Edge which would probably make it the most expensive trip ever…"