Walter was talking about funny error messages the other day - something about serendipity trackbacks. I'm still trying to figure them out. I'm trying to create a trackback in this entry, and if it works, I'll explain it so that other Serendipity users can do it as well, since the Serendipity website has been down forEVER.
Update: Still not working. I'm getting Matt to update Serendipity tonight.
Update #2: Matt has updated our copy of Serendipity, and suddenly trackbacks work just the way the Google cache of the s9y page says they do. I just make a link to a specific blog entry in my blog entry, and it magically goes out and looks for trackbacks.
Man, did that make me bonkers. I'm going to see if I can do some more, or if that one was all I'm going to get. :\