Do you have dreams of becoming a digital firefly, flitting back and forth across Europe? The folks at Crowdflow can help with that -- all you need to do is use your iPhone, and adopt a share-alike attitude. Using location data collected from 880 iPhones, the team has created a video showing iPhone movement through Europe for the month of April, 2011. This glowing digital ballet is just a start, however -- Crowdflow is asking iPhone users to extract and submit their own location logs to help build a visual map of how cellular networks are distributed throughout the world.