I believe my website is all clean now. Over a hundred invisible links had been hacked into my header and footer, and I didn’t realize it till I got a note from Technorati telling me they’d dropped my site because of the issue. :P Google had apparently dropped me too.
If you’re a WordPress user, you might want to check your site for this widespread hack. You can see the links by looking at the source code for your page; they’re otherwise invisible.
Many, many thanks to all who helped me figure it out, and special thanks to Mary for the initial walkthrough and to John for pointing out where the offending links could be located. I have awesome friends. :)
Whew. I’m glad you got that sorted out.