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 UIEvolution, Inc.:
Welcome to Long Island, New York; a stretch of island just east of the infamous Manhattan. Playing host to two of New York City's boroughs (Queens and Brooklyn) as well as two suburban counties (Nassau and Suffolk), Long Island is a home for a plethora of different styles, ideas, cultures and lifestyles that are booming with excitement and activity! "Top 25: Long Island", brought to you by the emerging 'Top 25' series by UIEvolution, is an interactive application that allows you the chance to discover, read, and possibly plan a trip around the hidden gem of Long Island, New York. With an easy-to-use instant phone call feature, you can quickly call landmarks and begin researching and possibly planning your trip to this great island of the Tristate area! And once you visit, you can start bragging to all of your friends and family on where you've been with the easy-to-use Facebook integration! Come discover more about Long Island with Top 25: Long Island!