ObjectiveTo measure the mediatic effect of different communication strategies used in public health advocacy. More specifically, to compare the effectiveness of the World Wide Web as a tool to attract the attention of journalists, with other more traditional formulas. MethodsFor the Spanish Public Health Association (SESPAS) Report 2000, two types of media strategies to communicate the report contents were programmed: a) traditional and passive strategies, centred in approaching journalists through press releases and press conferences around the SESPAS meeting (November 15-20 1999); b) interactive strategies, since August 15 to December 30, focused towards attracting health journalists to the non-embargoed, full text SESPAS report launched in a web site. To facilitate the web page use, we wrote a letter, in the first week of August, to all the members of the Spanish Health Communicators Association giving them the URL and the website map.In parallel, a monitoring system of the media impact was estabished from August to December 99, covering 250 magazines and 70 newspapers, in order to locate and recover all the stories about the SESPAS report for further analysis. ResultsSixty-six stories were recovered; they were published in 32 press media from 24 provinces with an advertising value of 18, 243, 873 Ptas. As a whole, smaller circulation rate papers published more stories than larger ones. During five months, the SESPAS report was present in the press agenda, even though stories were not distributed homogeneously over time. Information concentrated around three moments: the first one, a week after our summer mailing; the second one, in the occasion of the publication of a story about the increase in traffic accidents in El País, and the third one during the SESPAS meeting. There were significant differences among those stories published from the traditional strategies of communication and those published from the interactive ones, the latter being more diverse, with more contributions of the journalists and tackling a wider range of issues. ConclusionsThe combination of traditional and alternative communication strategies was a effective option. Unlike previous experiences in this occasion, with the network aid, the presence of SESPAS in media was not punctual around the Congress, but maintained during five months. The results and the obtained experience of this research can be useful for future public health advocacy interventions in Spain.