Google play has a hoard of apps and games to be downloaded free of cost. In competition to Apple Google play store provides a much higher number of free apps. However many of these free apps contain advertisements. It is through these advertisements that the developers earn money. So first thought that anyone will have is that these advertisements are good. As if the developer earns from these ads he will be encouraged to make more free apps for the consumers. In fact these ads are a good thing as they benefit everyone.