Mainly as a result of the appearance of Internet, that a culture of the gratuitous thing consecrated from the beginning, the companies of this sector they have had to implant creative structures of prices so that the user only pays by what he has the sensation of which really must pay (for example the case of < to href="http://www.skype.com">http://www.skype.com, recently acquired by < to href="http://www.ebay.com">eBay, another innovating model). Many are systems that are not new, since the radio and the opened television in implanted them many years ago. In this system, those that pay by the services of the company are not the users, but the advertisers. Other sectors, like the one of the telecommunications, are evolving constantly in their structure of prices of the services that offer (flat, tllamadas tariffs and Internet integrated, etc.). But also other ways exist to innovate, like the lawyers and consultants who work with new companies and receive their services in form of accionariales participation. If to all this we added that, more and more, many products become simple instruments of the benefit of a service (movable telephone, car, etc.) it is evident that in this scope we have a very open field to the innovation possibilities.