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 Urban Anomaly:
Want to send a holiday greeting in a hurry but don't have time or money to spend on a card? Holiday MSG works for you by generating a personal, custom email message with a few taps instantly. The process takes only a few seconds but, of course, you can always shake the device to generate a random message even faster.Add virtual gift attachments (no charge) or select a picture from your photo album.This season, give the gift of Holiday MSG and check out other cool apps from Urban Anomaly at www.urbananomaly.com or @urbanapp!Note: accelerometer functionality may not work on the touch.