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 Bullets and Bombs Software:
If you're a touch typist, you can use a computer keyboard without having to look at the keys. When you think about how much time you spend sitting in front of a computer, you'd think it would be second nature for your fingers to know the location of the keys, but it's not. It's a skill that takes time and practice to develop.Now think about your iPhone. It has a keyboard. You send tons of text messages every day. You'd think your fingers would know exactly where the location of the keys are. There's one way to find out: Key Locations.Key Locations is a game built exclusively for the iPhone and iPod touch. It tests your ability to become a touch typist (excuse the pun) using the on-screen keyboard. Try your hand at typing words on a keyboard whose keys have no letters. Or try typing words on a keyboard that has no keys at all! You can also watch keystrokes as they appear on a keyboard and try to guess the word that was typed. It's a free and entertaining way to see just how proficient you are with the iPhone keyboard.