OK - I had the vBulletin Bridge enabled on our wordpress site, and we were using vbulletin as our comment engine. I disabled it, and now, all of the twitter and/or pingback links/comments are showing up throughout the site with the following errors:
Warning: call_user_func(twentyten_comment) [function.call-user-func]: First argument is expected to be a valid callback in /home2/twcadmin/public_html/wp-includes/comment-template.php on line 1335
As best as I can tell, any previous comments (actual comments) are gone, which makes sense, because they are in the vbulletin forums.
All of these errors seem to be where a trackback (mostly tweets, RTs, etc) would have been.
Any suggestions on how to clean it up?
See an example at: