Adds Whitelist and Blacklist options for Trackbacks and Pingbacks
Prevents trackbacks and pingbacks from showing up as comments on posts.
Easily disable or enable comments for all posts and pages on your blog.
Displays trackbacks and pingbacks which belong to the currently displayed page in a widget.
MP Spam Be Gone is the simplest, most effective Spam blocker.
Pingcrawl adds a "Possibly related posts" capability by querying Google Blog Search for post tags and pinging the results. Limits are configurable.
Pingback Killer disables all of WordPress' pingback functionality.
Push notifcations to your device on certain events
One step process to remove pingbacks and trackbacks and leave only real user opinions in your posts comments.
Stops self pingbacks and trackbacks on own posts and pages.
Comment spam blocking plugin that blocks 100% of the automated spam with zero false positives.