What the hell is a Juggalo??

So I've been hearing a LOT about Juggalos lately, probably b/c they kicked the shit out of Tila Tequila (wow...how tough of you...she's annoying and retarded but come on...) What the fuck is a Juggalo?? Is it just a fan of Insane Clown Posse? That's really strange to me. I didn't think they were that loved, so much so that they have a club of thousands of weirdos that paint their faces and say womp womp.
I gotta be honest. Juggalos (and perhaps moreso, Juggalettes) scare the shit out of me. They combine 2 of my greatest fears: Clowns, and awful music.
I guess I should watch what I say about them, they might find me and beat me up. Since they're so tough. Ick.
I wanted to link to Tom Green interviewing Juggalos here, but it's not on youtube. Check it out on his site.
Edited with a link to photos from the gathering....I now have a new hell.

EDITED WITH MORE...WTF!.