Whom should I inform when I complete a challenge, either as a creator or a commenter?

You don't need to tell anyone, unless otherwise specified. We'll be monitoring activity on that challenge on our site (which is part of the reason why challenge stories and comments must be posted to the SWG archive and not other sites or SWG social media to count). However, if you're leaving a comment on a challenge story that is more than two months old or if we've missed awarding you a stamp that you've earned, we appreciate if you let us know by using the moderator contact form.