Woo! After lots of bugging Chase and Sony, I was finally able to login to the Sony Rewards website and order my Reader!!
I got 50 credits just for registering, so that might be up from the 25 reported before. And I discovered that by responding to one of the polls on the front page of the Rewards website gave me another 10 points.
I'll miss the $50 book credit, but I can't wait to receive my Reader!