Stop comments and Take down blog plugins
Stop comments and Take down blog plugins
Will let you temporarily take down comments on all posts by activating the plugin (I'm guessing you deactivate the plugin when you want to bring commenting back online). Good for battling a comment flood. Take down blog plugin will display a simple page asking readers to come back again soon.
[saw this yesterday on wordlog.com but reading it just now on Weblog Tools Collection gave a little more insight]