Answer:
It is the electronic version of junk mail or a salty meat in a can.
Up on high I wave away but not a word can I say.
I cut through evil like a double edged sword, and chaos flees at my approach. Balance I single-handedly upraise, through battles fought with heart and mind, instead of with my gaze.
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole Iβm best when I am roast.
In the evening I'm long, in the morning I'm smallΝΎ When seen in a ballroom, I'm nothing at all.
Dark, feathery, and popular in Baltimore and fantasy books.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?