There have been 17 or so Democratic debates (not that they get much chance to really talk issues or be specific in those debate formats, but the last few certainly have had real policy discussions, especially the last one with only Obama and Clinton participating), and his web-site is full of policy positions he proposes on just about every subject.
Oh, well, there you go! Provide someone with answers to their rhetorical questions! I listened to the debate on the radio, and was amazed at how much information on policy ideas that both candidates were able to present. It was nothing at all like the debates of the past few elections.
I think this whole "there's no substance" arguments I've been hearing are from people who are listening to the pundits and news talking heads (and we know how accurate they've been the past month!) instead of doing the research themselves.
Anyway, I'm glad I lived long enough to see this kind of campaign!