Last week, for five days straight I got spam from the same online company pushing ****** and ****** on my guestbook. Of course, I visited their site and used their contact form to send angry letters telling them to stop, which they have, but not before they nailed me three more times! So now I have these tacky ads on my guestbook, which is supposed to be for testimonials from people giving feedback for my service. Obviously I need to find out how I can delete these messages right away and I also wonder if there's a way to block certain addresses or perhaps there's a spam filtering option? Any help is appreciated.