I’ve just return from a very pleasant couple of days at ICPIC in Geneva. One of the sessions there was about social medial for healthcare professionals. I’ve had a question on my mind for a while about conference tweeting – it’s good fun and helps me to remember stuff, but is it effective in sharing science outside of tight professional networks? Eli P flagged this fascinating paper, which provides evidence that Twitter can be a useful tool to share science outside of your professional network (‘outreaching’), but you need a certain threshold of followers to do it effectively.