What is the subject everybody is interesting in ???

what is the subject everybody is interested in ???
In our society to be healthy is a priority,there is a cult of the healthy life and a big fear of illness, but what happen when you get sick ? I mean really sick.The first reaction is to talk about your disease with your friends, your famillly, but can they really understand what you live everyday ?
on the other hand, the social network website are growing every day, creating new ideas on the web.
A few start up such as Gencash propose the first social network, where the principal subject is your disease, on this website you can meet people who have the same problems and symptomes as you.The major goal is to break the loneliness and to help sick people to exchange feelings and information about their everyday problems.This website only exist in the USA, and their business plan are not found.
But we can think that is a good opportuniy for the pharmaceutical industry adds (legislation alow them to make advertising on drugs in USA).