Forum Mysql errors and bots?
 

I've been getting hundreds of these errors sent to me via e-mail. All are from search engine bots. It's like they are looking for forums that don't exist. Any ideas on how to fix this?

Code:
Database error in vBulletin 4.0.2:

Invalid SQL:

SELECT thread.threadid, thread.title, thread.lastpost, thread.forumid, thread.replycount, thread.postusername, thread.postuserid, thread.lastposter, thread.lastposterid, thread.dateline, thread.views, thread.visible, thread.open, user.usergroupid, user.displaygroupid
FROM thread AS thread
LEFT JOIN user AS user ON (user.userid = thread.lastposterid)
WHERE NOT ISNULL(thread.threadid) AND thread.visible = '1' AND thread.open!='10' AND thread.forumid NOT IN(33,22,15,27,23,,15,23,27)
ORDER BY lastpost DESC
LIMIT 0, 10;

MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '15,23,27)
ORDER BY lastpost DESC
LIMIT 0, 10' at line 4
Error Number : 1064
Request Date : Saturday, February 27th 2010 @ 02:10:23 PM
Error Date : Saturday, February 27th 2010 @ 02:10:23 PM
Script : http://www.the-sportszone.net/forumdisplay.php?f=50
Referrer :
IP Address : 208.115.111.246
Username : Unregistered
Classname : vB_Database
MySQL Version :