As somebody with a chronic condition, I'm in a group or two on facebook about it. Its nice to get advice from real people who have dealt with things before. However, I find that 85% of people that are in the group usually post things akin to "I'm vomiting blood, have horrible pain and high fever, what should I do?" Erm... maybe go to the ER? While its not a bad thing to use to seek out some general advice (especially if you take anything you hear with a grain of salt), a lot of people use it as a substitute for real medical care or as a way to justify their fears of not going in to see a doctor, and that's terrifying.