Mobile advertising is one of the most fast-growing means of mobile marketing. Like with any kind of advertising, if applied correctly, it is a good way of promotion. If not, it becomes an annoying intrusion that will leave negative impressions. Mobile ads are widely used, but how should it be made to reduce the risks of the users' irritation? For example, untargeted SMS are the least pleasing messages one can receive. Such ads are dubbed spam and aren't favored among recipients. And what about placing...