I'm guessing this is MediaWiki. To rename/move a page:

http://meta.wikimedia.org/wiki/Help:Moving_a_page

This is better than simply copying the content because it creates a redirect and saves the edit history.

Making a entirely new page and transferring the content seem to work.

If the data was migrated into a database with a really clean and simple multi-user login, with a view available similar to the spreadsheet, and finally having each user verified against an auth string they placed in their user profile on HN -- that'd overcome the issue with people messing with the columns and more than just their row: -- also emails could be obfuscated.

Just click on the "Move" tab at the top of the page. Similar to the way it works in Wikipedia.

For anyone wondering where this is, you have to create an account for it to show up.