If you see a story that you believe is in need of reviewing or editing, please add it to this category if you are not up to the challenge of fixing it up. Also, leave what you feel needs to be fixed in the edit summary so that reviewers can know what to look for in the page's history. If it something minor, like a comma that needs to be added etc, just fix it yourself and don't add this category. It takes the same amount of effort to add a category as it does to fix something very minor. The author is relying on you to get their story out of this category and onto the main ones.
Anyway, this category can also be used to tag pages that you believe may not meet the wiki's standards. For this reason, do not to remove this category from pages on the grounds that the grammar/spelling is fine, because the story or content may not be.
Lastly, this category is a standalone one. For instance, don't add the category "Beings" along with the "Marked for Review" category. This prevents subpar stories from leaking into other categories before they can be properly edited. Also, if you come across a story that has another category alongside "Marked for Review", feel free to remove the other category yourself.