From StrategyWiki, the free strategy guide and walkthrough wiki

This template should be put at the top of a page, not the bottom or in any section. It will add the page to Category:Requests for deletion. You should only add this template if you have a valid reason for wanting the page deleted (i.e. not just because you don't like it):

• No content, and no edits for a reasonable period of time (more than a couple of weeks)
• Copyright-infringing content (marked with copyvio, and no edits for a reasonable period of time
• Irrelevant content (e.g. spam or advertisements)
• Pointless redirect page (i.e. one which encourages people to link to the wrong thing, and which will never be used)

[edit] Example

{{delete|A valid reason.}}