Guestbook Shutdown (Temporarily)

It has been vulnerable for several weeks, my guestbook filled by spams from spesific adresses. It seem the entries filled (semi) manual, not so automatic, but still disturbed me. There are about 10-20 entries per day. Well I must clear it every day and it was an uncomfort task. 😦
Hmm.. I must modify the guestbook script, but I have no enough time to do it, so I shut it down temporarily. Hope available soon.