The media in Colombia, specifically the most important national radio stations, have not remained behind and have chosen in recent years to join twitter. The twitter accounts of Bluradio, Caracol Radio and RCN Radio analyzed, the interviews with managers of these and the emissions of news programs selected show that social networks are still a challenge today. One of these challenges is to find the real objective of the media on twitter and this not only consists of an active listening in search of breaking news. To achieve a communicative legitimacy in Web 2.0 is necessary to adapt to the culture of sharing networks, otherwise it is doomed to get only a new channel broadcast news.
