User blog comment:BertH/Darwin - The Next Evolution of Wikia/@comment-4206034-20130822170746/@comment-3474542-20130823021234

There are already two tagging options available... One is called "Follow" and the other is called either "User_talk:Imperium_Guy" or "Message_Wall:Imperium_Guy" (depending on your wiki's preferences). Both will give you a notice when the page is changed.