Consider Google (Google Health) and Microsoft's (HealthVault) impact on the consumer-driven health movement and the public's need

Question:

Consider Google (Google Health) and Microsoft's (HealthVault) impact on the consumer-driven health movement and the public's need to participate in their own health care. What are the pros and cons of this type of consumer health application? What barriers to expansion of this concept do you foresee in the near future?