Let me give you an exemple it seems that the people posted here have a bare minimum on thinking and reading.
Exemple1: THE EXPLOIT: Let's say your running around in and a boomkin druid uses fearie fire on you. he is at a distance and it would look impossible to reach him. You use the skill shadowmeld and go into stealth. The druid goes ZOMGWTF? I HAZ USED FEARIE FIRE ON HIM, HOW HE STLEATHZ? and runs around, wait till the fearie fire runs out OR when he runs right into your lap. ZOMG EXPLOIT INVISIBILITY WITH FEARIE FIRE?
Exemple2: THE MACRO -> lets say your running around and a lock finds puts his dots on you and ur VANISH IS ON A COOLDOWN. You use Cloak of shadow to remove the DoTs(NO FEARIE FIRE, OK??) and cast Shadowmeld, SHADOWMELD WILL BREAK ON MOVE, BUT OH NO IM OUT OF COMBAT, SHOULD I USE STEALTHZZZ? Putting this in a macro WITH NO SHARED COOLDOWN can make this instant if u stand still for a second. Greetz noobs