Extended Comments Options for WordPress Trackbacks/Pingbacks
You can disable comments on individual posts, but if you’ve got more than twenty posts, this takes ages! This plugin allows you to quickly and easily switch comments (and trackbacks/pingbacks) on or off with a single click. Extended Comment Options 2.0 has been tested on WordPress versions 2.3.2. Support for versions below this cannot be guaranteed. Upgrading to the latest version of WordPress is always recommended
Plugin Author Homepage: http://beingmrkenny.co.uk/
Download from http://wordpress.org/
Simple Trackback Validation Plugin
Simple Trackback Validation Plugin for WordPress 2.x performs simple but very effective tests on all incoming trackbacks in order to stop trackback spam.
When a trackback is received, this plugin
1. checks if the IP address of the trackback sender is equal to the IP address of the webserver the trackback URL is referring to.
This reveals almost every spam trackback (more than 99%) since spammers do usually use bots which are not running on the machine of their customers.
2. retrieves the web page located at the URL included in the trackback. If the page doesn’t a link to your blog, the trackback is considered to be spam. Since most trackback spammers do not set up custom web pages linking to the blogs they attack, this simple test will quickly reveal illegitimate trackbacks. Also, bloggers can be stopped abusing trackback by sending trackbacks with their blog software or webservices without having a link to the post.
You can select how to treat spam trackbacks (do not save in the database or mark as spam or place into moderation) and several other stuff.