After using another guestbook for a while on my two sites, I had to upgrade in order to avoid spam, but after upgrade it never worked, and I had to donate for having a "last item module". So I changed to EBR with great success. EBR is easy to set up and use, exactly what I need on my site. And, I was free to consider donation after testing, something I did, without hesitation.
Thank you for the donation and the review!