Administrators have the ability to easily roll back edits (to revert vandalism), to protect pages, to delete and undelete pages, and to block or unblock editing from IP addresses and users. Along with the abilities of an administrator comes an obligation to watch for abuses of the wiki, such as spam and vandalism. The current list of administrators can be found in the Admins list. If you think you should have administrator privileges, contact one of the current administrators, or the Technocrats committee.
Note: Anyone can revert an edit by going to the history of a page, selecting an earlier edit and editing and saving it. The administrators simply have a rollback link which makes this a one-step process.