ThePinkKitty writes into ask the Empress:
What's a moonbat?Bill at INDC Journal is the recognized authority on moonbat research. A moonbat is that rare breed of leftist, usually sporting ugly clothes, a home made sign, and stinking of patchouli found at anti-war protests across the country.
You may see the moonbat research he has conducted here. Links to all of his entries on moonbats are at the bottom of that page.