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?
I've left website comments on folks' sites that I think are cool or to ask questions, so I think that's totally fine, or if they have a designated webmaster email or something.
I do it all the time!