What is the meaning of idiom :"on the ground" I read a headline in the annual report which contains this idiom. I believe that it did not mean that some thing is put on the ground, surface of the earth. To be more specific, it was: UNWTO ON THE GROUND. Does it mean something following sector of journalism?

Ietls Writing Task 2 [This below essay is followed the form of Ielts writing task in Academic] Today, the high sales of popular consumer goods reflect the power of advertising and not the real needs of the society in which they are sold. To what extent do you agree or disagree? The last one hundred of year has witnessed a considerable development of advertisement. This phenomenon has raised a certainly valid arguments as to whether it is an useful tool due to boost the consumed products. Despite the fact that some people believe that this would lead to the situation that the purchasing process is not as a result of human demands, I firmly contend that the advertisement has influenced positive effects to the volume of sales. First of all, according to economic theories, advertisement is one of the critical channel of promotion process which is involved in marketing administration. Hence, its benefits are completely undeniable in the world fulfilled by the exploded information age. The customer would identify the details and functions of all the goods, for the one they concern about and the one not. However, that could just demonstrate the form of their approach to information resource, it will not replace their demand resulting purchasing decisions. In other words, advertising only played their role as a supporting utilities which shortens the distance from the supply and the demand, or their potential customers. Alternatively, there is a unfoundedly opponent trend that the consumers conduct their decisions because of the impacts of the banners, commercials, billboards, flyers, brochures and so on. If they are not any motives or needs in terms of completing the buyers' satisfaction levels, the clients would not spend their cash or credit cards to pay for. A regular teenage girl would not choose a pair of male leather shoes for herself after seeing her handsome idol who acts in an gorgeous television commercial. In conclusion, in this case, the advocates' arguments would seem to outweigh the one of the opponents. To my mind, nowadays, all people can self-equipped knowledge to become a smart consumer as well as self-decided their behavior that is out of the control of the power of advertising.