floomoon/omniauth-mailchimp — pull request #6 by colinyoung (2014-04-10 17:06:14+00:00)
Title: Continue working with MailChimp if contact not set

We had a few users who were apparently able to authorize with MailChimp before their MailChimp contact was set. I'm assuming this is someone who signs up as part of the OAuth flow.