You are going to block this site. This will do the following:
- You will no longer see this site in searches.
- Site will no longer see your site in searches.
- Site will not be able to comment on your site profile.
- Any comments this site has posted to your profile will not be displayed.
Are you sure you want to do this?
The website I use is https://www.smartgb.com/?p=newtoplink1; I've also seen https://www.htmlcommentbox.com/ to make a guestbook that's hosted on your own site.
https://commento.io/ is privacy-friendly, open source and self-hostable. There's no free hosted plan though, the cost of not using advertising as a business model...