The user then sees ads for vacations and cruises on Facebook. A user “Likes” a friend’s Starbucks check-in in Foursquare, but has never “Liked” Starbucks’ fan page on Facebook. Now Starbucks knows to show them ads and deals. It’s the re-creation of the tracking cookie’s capabilities in a “web” where people surf mobile applications, not websites. And what could it become? The possibilities are mind-boggling. You “Like” photos of beaches, you launch a travel app to book plane tickets for a work trip and find Caribbean vacation packages are now on sale. Coincidence, or “Like” tracking?Read the full article.