I didn\u2019t know my friend Ross caught a piranha in Brazil until I started using Jetpac.\n\n\n\tThe new iPad app turns your Facebook friends' photos into full-screen travel slideshows. The app (current version 0.0.8) is simple in its approach. Download and open the app, give it your Facebook sign-in info, and right away, you see travel photos from your FB buddies. Selected photos from other Facebook users are organized in a \u201cHot 100 Cities\u201d slideshow, as well.\n\n\n\tYou can pause slideshows at any time with a screen tap. And if you love a particular photo you can tap the \u201cLove\u201d button to show your affection. Been there done that? Touch the \u201cBeen There\u201d button. See someplace to add to your bucket list? Hit the \u201cI Want to Go\u201d button.\n\n\n\tEach time you tap one of these buttons, the app creates another new slideshow. For instance, if you tap \u201cI Want to Go\u201d on one friend\u2019s photo of Portugal, all your friends\u2019 photos from that country are added to the \u201cI Want to Go\u201d slideshow.\n\n\n\tJetpac is a great idea, and it\u2019s beautifully executed. Interestingly, the app\u2019s developers didn\u2019t rely entirely on geotagged Facebook photos; The company developed an algorithm to determine location on non-geotagged images using additional information, where available, including photo-album names.\n\n\n\tUnfortunately, this sometimes creates \u201cfalse positives.\u201d Among the roughly 4,000 photos Jetpac collected from my Facebook connections were dozens taken from a friend\u2019s Thanksgiving Day volunteer efforts, in which she served turkey at a community shelter. All of those photos were tagged in Jetpac as coming from, you guessed it: Turkey.\n\n\n\tJetpac is revelatory in several ways. Who knew that all those travel photos my friends posted, most of which I\u2019d never even seen, could be so inspiring?\n\n\n\tI also learned more about my friends; I had no idea Carrie Beth had been to a bar made out of ice in New Zealand, for example.\n\n\n\tFinally, seeing my friends\u2019 vacation photos, one after the other, made me aspire to improve my own travel photography. Translation: It\u2019s time to start planning my next vacation. Brazil is looking pretty good right now\u2014except for that piranha.