Originally Posted by
shoc
The entire follower system is basically a facebook game, you collect them through exploring the world and questing and completing achievements, and you send them out on missions which complete in real time very much like a facebook game. So a raid that takes 7 days to complete will yield better rewards (epic items, epic materials) than a scenario which only takes 30 minutes, which would likely yield some greens and basic mats. Some followers are better at completing some missions than others so you kind of have to strategically send followers out so they don't fail the missions.