One of the most-requested features of SharePoint for the current release was the addition of the recycle bin. This is great for users who accidentally delete a file. But what if the user deletes a site? SharePoint still does not have a native recycle bin for sites.
One option is the Microsoft IT Site Delete Capture 1.0 tool available at codeplex.com, which captures sites that are deleted by end users and backs them up to disk using the event model. The restore would take place by an administrator.