Hmm.

    The address wasn't understood

    Firefox doesn't know how to open this address,
    because the protocol (itms) isn't associated
    with any program.

    You might need to install other software to open
    this address.

    itms://itunes.apple.com/us/app/voyager-the-game/id553336542?ls=1&mt=8&ign-msr=http%3A%2F%2Fnews.ycombinator.com%2Fitem%3Fid%3D4475013