For the article recommendation test, we queried user table to get editors' email addresses. We then excluded the emails that were not verified. We've received a comment here that suggests the user has changed his/her email addresse and we have somehow retained the old email address. I'd like to get to the bottom of this problem. Can someone help with this, in the Talk page or here? Are we looking at the wrong table? And in general, how can old information be in the user table?

Sorry for sending an email over the weekend. A response on Monday would be great. :-)