On a tangential (at best) note: The main thing I want in terms of online + medical, is one place to access all of my medical records. Sadly, my GP uses one EMR system, and the hospital and it's associated doctors (including my cardiologist) use a different system, and it's painful - if not impossible - to share data between the two. So if I wanted, for example, to get a graph of my cholesterol numbers going back for the past year, I have to login to two different systems, copy and paste the numbers into a spreadsheet, and then do the analysis.

And FSM forbid I want to try and correlate those numbers with something from Strava (which logs my activities) or Fitbit (which has my weight and bodyfat %, etc.)

Unfortunately this is more of a political problem than anything, as the various EMR vendors don't have much incentive to open up their systems with APIs and data-export functionality. At least outfits like Strava and Fitbit do (IIRC) have some API support, but getting the medical records bit is a real challenge.