So obviously, it should be used against mothership/carrier/BCs and stuff like that, is it still good against smaller units?
Also, as I've just discovered, the corruption ability works against all units, not only air (!), which is awesome, and brings up other possibilities like corrupting thors or ultralisks, but what about other units?
Other corruptors, mutalisks, vikings, stalkers? Smaller things like marauders or helions?
Edit: And of course, I don't think it is ever viable to base your strategy on building a lot of curruptors to use the corruption ability if you know that the opponent goes for stalkers for example. My question is about whether to use the corruption ability if you "already have" corruptors, built for whatever purposes.