I absolutely love travel books — they provide you with useful tips, suggestions and maps for popular destination spots around the globe. But what I don't love is lugging these heavy books around while I'm trying to admire the Champs-Elysées or while trekking across the Sahara Desert.

That's why I was thrilled to learn that Frommer's is going digital by offering iPhone and iPod touch apps available for purchase from the App Store in iTunes for $9.99. So maybe they aren't free, which would be nice, but you'd spend the same amount on a book and this way you don't get stuck carrying a heavy book during your travels!

To get the app, just click on the travel category in the App Store and you'll find the 2008 editions of Frommer's London, New York, San Francisco and Paris.