Block Top Spammers is a WordPress Plugin.
Block Top Spammers displays a list of your top spammers’ IP addresses, based on all comments in your database that are marked as spam. It also generates a blacklist for your .htaccess file to block those spammers from your website entirely, thus taking load off the server. You will need another plugin (like Akismet) to identify the spam.
Top Spammers requires PHP 5
Top Spammers is hosted on wordpress.org:
As with any plugin hosted on wordpress.org you can also get the plugin using subversion:
# the development version svn co http://plugins.svn.wordpress.org/top-spammers/trunk # the latest stable version as of 2010-03-23 svn co http://plugins.svn.wordpress.org/top-spammers/tags/0.5