According to a blog post by Vicente Baos titled “Final Declaration”, over 224 blogs and organisations endorsed the initiative. Although the three promoters have thanked everyone for their support for this worthy cause in this final blog post, the hashtag #NoSinEvidencia is still being tweeted late into January. Supporters come from all over the world and a variety of professions, including scientists and journalists. There was a strong response from HCPs in Spain (with over 60 influential HCPs tweeting the hashtag), and using there are several examples of what kind of stories were of interest to many of these users and how information travelled across the social network.

Topic cloud indicating that water is the most common word across all tweets. Much of the time, HCPs compared homeopathy’s efficacy to water.

Fig. 2: Strong negative sentiment: “The principal danger of homeopathy is that it thinks of sick people like a string of idiots.” There is a link to a homeopathy website, conversation between HCPs follows as a result of the tweet.

Figure 3. HCPs retweeted posts by the Spanish Vaccinology Association.

Figure 4. Initial tweet on No Sin Evidencia in English, by popular writer Simon Singh (50K followers), is passed on by Spanish users in other professions.
*Some of the science and HCP blogs discussing the AEMPS manifesto:
http://aplamancha.blogspot.co.uk/2013/12/no-sin-evidencia.html
http://iboneolza.wordpress.com/2013/12/11/no-sin-evidencia/
http://www.pediatriabasadaenpruebas.com/2013/12/no-sin-evidencia.html
http://medicocritico.blogspot.co.uk/2013/12/no-sin-evidencia-la-homeopatia-el.html
Full list here: http://nosinevidencia.wordpress.com/adhesiones/