Twilight of the Travel Guidebook?

Flickr photo by AltemarkARE GUIDEBOOKS STILL WORTH THE PAPER THEY'RE PRINTED ON?

Maybe. Fact is, they're still considerably cheaper to start a fire with than an iPhone.

Here's the thing: my publisher, Countryman Press, wants to do a 2nd Edition of Yosemite, the Southern Sierra Nevada and Death Valley. Which is good news, of course. But the question arises: in the age of GPS, Wi-Fi, googlemaps and lithium-ion batteries, what makes a travel book worth the cost of the paper it's printed on?

Read more about what the next incarnation might look like at The Traveler's Notebook. Your honest input sincerely appreciated.