Feeding Live

[Zoaelite]

Thought I would pick Canreef's brain on a discussion that I was having with Jdigital. Is it appropriate or ethical to feed live food to animals in your possession? For example:

Feeding harlequin shrimp live starfish
Feeding large preds (Groupers, Triggers, Puffers...) live fish/ live inverts
Feeding Mantis Shrimp live fish/ inverts

Any insight would be appreciated.
Levi
(Looks like my Poll didn't work Oh well, should make for a good discussion though)