Kylie Harper is not a bull-horns, marches, and rallies kind of activist. Not that she has any qualms about organizing her team to hit the streets to take down major corporations, she just does it with a soft voice - and aims for a soft underbelly. When we met up in the cafe of the Housing Works Used Bookstore in Soho, her first words were a softly amazed "I've got to sign this place up."