This plugin searches duplicate posts by title or content, filtering by category and can permanently delete them with images or send them to the trash
Ajax powered admin page to show, edit, add, and remove user meta. Choose dropdown list by User Login, ID, or Display Name.
QPM adds page/post management links for one-click actions as drafting, private/public, opening/closing comments/trackbacks, trashing/deleting, etc
NukePiG allows you one-click deletion of all your blog posts, pages, tags, categories or links.