Confluence, the new wiki software we are using for the Reference Wiki, offers you a way to get a daily email message listing the pages that have been edited or added that day. If there are no changes or new pages on a day, then there will be no email sent out. This is a great way to keep tabs on any changing content in the wiki. It is worth mentioning that if there are any major changes in the wiki, a blog post here announcing it is also a good idea (as might be the case if a service or policy is added or revised).
Here is a video with instructions on how to log in to the wiki and set up the email notification option. (FYI, there are two buttons for launching the video: the one on the left allows you to view the video in a small window and the one on the right with the four arrows will use the full screen to show you the video, which may make it easier to see what’s going on.)