A non-genre specific tribute with all profits going to the Make-A-Wish Foundation of Illinois. It was organized by Neil Main, a fan from the UK, and sold as a companion CD at the first Act IV-A Tirbute To The Smashing Pumpkins charity concert at the Metro in Chicago. It includes contributions by artists/SP fans from across the world. See http://www.act4.net/ for more info.
It was hand-numbered and was initially a limited edition release of 200 copies. After an endorsement by Billy Corgan, the album quickly sold out and a 2nd pressing of 200 copies was made, also hand-numbered.