User blog comment:DaNASCAT/Wikia's Quality Blitz - Beating Down Bugs/@comment-1929113-20130130201044/@comment-26686429-20130130223115

I don't really need to know that Wikia got the message unless they actually have some info in response. But a lot of users may think "I don't know if I sent that, I didn't get a message", and so they'll send again, this gives the user feedback by email.

You're right about the email to rate, it'd be nice if they put this in if the ticket is closed on response, I'm guessing that's a "feature" of the support software they use, and beyond their control.