WPF Gravatar Image Binding

gistfile1.cs

using Cgum; // Common methods - EncryptMd5() [personal library]

// init: Gravatar = GetAvatar( email )

public static readonly DependencyProperty GravatarProperty =
    DependencyProperty.Register( "Gravatar",
                                 typeof( BitmapImage ),
                                 typeof( SingleCustomerVM ),
                                 new PropertyMetadata(
                                     new BitmapImage()
                                 )
                               );

public BitmapImage Gravatar {
    get { return ( BitmapImage )GetValue( GravatarProperty ); }
    set { SetValue( GravatarProperty, value ); }
}

private BitmapImage GetAvatar( string email ) {
    string hash = email.Trim().ToLower().EncryptMd5();
    string url = "http://www.gravatar.com/avatar/" + hash + "&size=60&d=mm";

    return new BitmapImage( new Uri( url.ToLower() ) );
}

/*
XAML
    <Image  x:Name="imgGravatar"
            HorizontalAlignment="Left"
            Height="60"
            VerticalAlignment="Top"
            Width="60"
            Source="{Binding Gravatar, Mode=OneWay}" />
*/