Update: Tag history has been overhauled. You can now clearly see what tags have been +added and -removed from a post within the tag history as well as the category for each tag and the rating history. To view the tag history of a post click on it and look for the history section within the sidebar.
Wiki Listing
Add entries to our database to give users a better understanding of tag definitions and the cases they should be used. This Wiki is a new feature to our booru and is still in development.