To me, medicine 2.0 is a very recent but appealing concept. For those who know as much as I do, an explanation I found on the web (of course!):

Medicine 2.0 is a combination of medicine and web 2.0: interactive use of digital tools to learn, communicate, keep up with literature and so on. Click on this Power Point presentation to get a short description. 

How web 2.0 is changing medicine: an editorial in BMJ about web 2.0