Neither of the existing answers seem very sure. But yes, Taunt is reflected by Magic Coat (and the Ability equivalent, Magic Bounce).
Magic Coat (Bulbapedia)
I don't think so, no, because its not a status move. And Taunt does stop Taunt.
EDIT: I was just reading about status ailments and taunt, being a status move, would be bounced back, I think.
Try this, from smogon.
* All moves that induce status as their only effect (including Yawn), except Teeter Dance * All moves that do no damage but alter the target's stats (including Flatter and Swagger), except Defog and Memento * Attract * Block * Gastro Acid * Leech Seed * Mean Look * Spider Web * Worry Seed