I’m not really sure what this says about the state of mainstream health sites on the web. The top 7 are significantly more popular than the outling 13. It is interesting to not see a Google-driven result in this list.
I am also left to ponder what impact new sites will have. Microsoft’s HealthVault beta doesn’t make the cut here; it will be interesting to return to this list in 6 months and see what has changed.
Thanks to @Bart for the link.