What Is Always Acceptable for the QBWiki
Reasonably available public information that's relevant to quizbowl, such as being part of a school's quizbowl team or having attended a tournament, is always fair game for inclusion on this site. This information usually comes from other online sources, and thus is already generally available.
What May Be Removed from the QBWiki
Personal details that do not pertain directly to quizbowl and that are not already available on the internet. For example, a story recounting what you saw Leo Wolpert do at the 2004 Chicago Open is acceptable material for the site as long as it is accurate, but Leo also has the permission to request that such information be deleted. His actual attendance at that tournament qualifies under "What is Always Acceptable for the QBWiki".
What Is Unacceptable for the QBWiki
False information is never acceptable on the QBWiki.
How to Remove Information from the QBWiki
If the information meets the "what may be removed" criteria, you can remove it yourself by editing the page. (You'll need to be logged in; get an account first if necessary.) Or write to the QBWiki's principal administrator, Jonah Greenthal (email@example.com). Keep in mind that simply editing a page does not make information completely disappear: old versions of the page are accessible in the "View history" tab. If it is important that removed content be inaccessible, write to Jonah with the details so it can be more thoroughly removed.