I’ve finally bitten the bullet and implemented Trackback here—well, half of it, anyway. My site should now be able to handle Trackback pings from other sites. I even implemented the RDF autodiscovery crap, but added a bonus: a new meta tag like so:
<meta name="trackback.ping" content="Trackback URL for a particular entry">
So maybe I can influence client software development in some small way with this.
I haven’t implemented outgoing Trackback pings yet—i.e., me pinging others’ sites when I link to them. I’ll get around to it at some point.