Nice but very inconsistent

All I can say is it looks pretty good. Once you get this guestbook working, you can’t assume it’ll always work. I just happened to randomly check it by posting a message. Suddenly, I’m getting an error 500. Also, the form is now asking the user for a homepage address! I tried to go into the settings to remove that item and got an error 500 again just be clicking on Settings! Very frustrating!

So now I have a broken guestbook which means my site is flawed unnecessarily. I would deactivate and reactivate the plugin but the last time I did that all the entries got deleted!