I'm not sure if this is a new limitation, but I just noticed that the free "Basic" Janrain service is limited to 2500 registered users ( http://www.janrain.com/products/engage/get-janrain-engage). Since the book is pushing Janrain as the easiest way to incorporate OpenID and OAuth ( http://www.web2py.com/book/default/chapter/08#Integration-with-OpenID,-Facebook,-etc.), I thought it might be worth mentioning that limitation, so I added the following to the call-out box at the bottom of the Janrain section:
Janrain's free Basic service allows up to 2500 unique registered users to sign in annually. Accommodating more users requires an upgrade to one of their paid service tiers. Anthony
