Hello,
Many CMS nowadays like Joomla or Drupal allows guest blogging means even a guest does a security metric and then comments on the article, and it could be for the exchange purpose between blog sites or advertiser requests from an advertising network.
So what is wrong with guest blogging?
If you allow comments for guests you could not monitor easily the spam comment.
Much content generated with AI or plagiarized or advertising will be submitted.
Even if you moderate manual comments on Joomla or Drupal it is still not enough since from 5 comments there are 2 spam comments.
Registration prevents this kind of practice and could help your Joomla or Drupal command interface track the spammers that post not good content.
I lost a blog when doing the guest blogging for some people advertising on the comment section for something not related to the article itself.
