Very interesting: How to let Instagram be your travel guide. “We are in New York for a long October weekend. I’ve come here with my best friend Stephani so she can show me how she uses Instagram — the wildly popular photo-sharing app — as a visual guidebook when she travels. We’ve just arrived from Boston, and we’re starving. A freak rain-and-hail storm suddenly blows in, blotting out the view from our hotel room window. Luckily, my companion knows just where to go: in search of the pizza that captured her fancy on Instagram a few days ago, its crust pillowy and lightly charred.” Now I’m hungry.