Social networks were in their infancy in 2004 when Keith Schorsch's struggle with Lyme disease began. Back then, connecting with other patients often meant navigating a patchwork of listservs and chat rooms.
In just a few years, the landscape has changed dramatically as Web 2.0, the shift toward user-generated content, has penetrated the realm of health and wellness, creating a booming trend called Health 2.0.
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