Just found this site & so propitious. We're going to be having a book discussion of this very text over here:http://groups.google.com/group/jodoshubuddhism
Don't want or mean to take the discussion away from here, in fact I'll tell our group members about this website too. Gosh I missed e-sangha.
FYI the groups has two Jodo Shu ordained priests, Stephen and Shinri there, answering questions etc.