Somebody needs to build a site that aggregates data from all of these devices - this could be a real dashboard for your body and would be incredibly useful. Imagine giving your doctor a guest login for your dashboard...
Thanks for the link. I've been thinking there was a gap in the market for this kind of service for a while now. I wonder if there's scope to add some psychological indicators to the API, so as to integrate with Mappiness (http://mappiness.org.uk) or similar?