I don't think they pray. I stayed with my ex-girlfriend's family in PA once and I believe they call it chanting. Sounds really wierd and cultish... but she used to say "I want to get into Princeton... I'm gonna chant for it!" I may have to do some research though to see if I am correct.
@Treymel: They don't believe that the earth and/or universe was created by a god... but they believe in reincarnation and oneness with the earth.