Pillow Fight Club is a fad that has emerged from the social phenomena of Flash Mobbing and was originally initiated by the founders of Mobile Clubbing, and is heavily based on the film/novel Fight Club. They are now found around the world
Here are some links from Wikipedia:
London Pillow Fight Club Photo’s of a recent London Pillow Fight Club meet.
Madrid Pillow Fight photos
Mobile Clubbing The founders of Pillow Fight Club.
Guerra De Almohadas Rules in Spanish
Tel Aviv photos
TVNZ Article by TVNZ on a recent Pillow Fight Club meet in Tel Aviv, Israel. Sourced from Reuters.
Trafalgar Square pillow fight photos