- (NSInteger)wordCount
{
    NSInteger length = [self length];
    NSRange inputRange = NSMakeRange( 0, length );
    NSInteger count = 0;
    while( YES )
    {
        NSRange range = [self rangeOfCharacterFromSet:[NSCharacterSet whitespaceCharacterSet]
                                              options:NSCaseInsensitiveSearch
                                                range:inputRange];
        if( range.location == NSNotFound )
        {
            break;
        } else {
            count++;
            NSInteger pos = ( range.location + range.length );
            inputRange = NSMakeRange( pos, length - pos );
        }
    }
    return count;
}