Just posting Lodewijk’s request in this thread as a feature request here.
Currently Lodewijk’s Akismet module/extension only deals with comment spam as there are no appropriate hooks in cp.trackbacks.php to deal with trackbacks. Akismet is “a collaborative effort to make comment and trackback spam a non-issue"and is free for personal use.
Lodewijk sez
I just checked the appropriate file for new extension hooks, but alas… Nothing there. As long as they remain absent, I won’t be able to add trackback protection to the Akismet combo.
So, dev-crew, if you can find the time to add some hooks in cp.trackbacks.php (preferably in the function receive_trackback()), that would be grrreat. Yeah.
Given trackbacks are still vulnerable (see comments) and how big of a problem spam is, it would be great if the hooks could be pushed out with a new build, or something like that, if I’m not pushing my luck too much! I’ve got a project now where it would be extremely handy.
Considering my strong temptation to remove Trackbacks entirely in the next version, this might not be a problem for much longer. However, if we have a 1.5.1 we can put another hook in for you.
Considering my strong temptation to remove Trackbacks entirely in the next version, this might not be a problem for much longer.
Heh! I agree that trackbacks cause more trouble than they’re worth. You’ve certainly got my support to remove them altogether. People could always use the Particletree Blog Search alternative.
Re: the trackback issue, I still find them useful and do use them occasionally. I vote against removing them altogether. I mean, it’s not as though anybody has to use them, really.
Paul, if you do decide to keep trackbacks, instead make the default MySQL value for enable_trackbacks to n. As well as trackback_system_enabled to n, and show_trackback_field to n.
That’s one of the first things I do when setting up a new site.
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People could always use the 
It’s a MODULE. If people don’t want them, they can not include them.
