Medical Search Engine

Alright, so this is last week's news, but Healthline has finally launched their medical search engine. Looks alright so far - guided navigation and graphical maps are nice, but I don't see myself ever using them. Because it's medical, trusted sources are good, so if they are manually reviewing the sites in their index, I definitely support that kind of behavior.
On the other hand, I'm not sure how much better this is than a trusted Medical Roll on Rollyo...