The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Blackbit AB:
Footprint ONE is a social networking application which allows you to post and read geotagged messages.In Footprint ONE the location is in focus. Post messages, or footprint as we call it, to share information about a specific location. Or explore your surroundings to discover great restaurants or a nice B&B from other users footprints.A cool thing is that you can create your own subjects. This enables you to share information with people that share your interests. For instance you can create a subject for bird watchers or tell other surfers about your favorite surf spots,Features:- Post geotagged messages- Read recent or nearby messages- Create subjects or groups- Subscribe to geotagged messages on specific subjectsYou don't need to register, you don't need to follow, just footprint!