c.e.o. tom ryan says promoting causes was a natural for threadless because its community of artists and consumers tend to be young and socially conscious. but, he admits it also made good business sense. >> doing designs for causes specifically is one great way to bring in people who are already supporters of a cause. when they support that cause, sure, they will probably find other things on threadless that they are interested in, but it wasn't the primary motivating factor that made us do this. >> reporter: threadless wants to host at least one cause-related design challenge a month next year. it thinks harnessing the passions and pocket books of its own community can help make the world a better place. diane eastabrook, "nightly business report," chicago. >> suzanne: tomorrow, our series "conscious capital" continues with starbucks c.e.o. howard schultz. >> i want starbucks to be the kind of company that perhaps can be a model for others to say "we can make a difference," and at the same time we c