One of the goals Plogs.net has always had as a daughter site is enhancing and improving the LiveJournal code for use by webloggers. As part of that goal, Plogs.net has implemented outbound Trackback pinging.
Trackback can be used in a number of ways, but almost all of them are dedicated towards more communication between authors of various journals and weblogs. Whether your preferred use of Trackback be remote commenting, gathering meta data on different posts, or simply aggregating content across different locations, Trackback is a useful tool.
Similar to the Weblogs.com pinging that LiveJournal recently implemented, this tool allows the LiveJournal code to fit more seamlessly into the wider world of weblogs. By combining the centralized server aspect with some of the features offered by individual Content Management Systems, sites are able to alter the LJ code to provide an easy to set up weblog while still offering all the functionality of a full-featured content management system.
For more information on the Trackback pinging set up at Plogs.net, feel free to checkout the Plogs Changelog. All code changes are available there. Following the spirit of LiveJournal.com, Plogs.net is an open source journalling site working to increase awareness of LiveJournal in the weblogging and business world.