I have many static HTML web pages in which I had used Facebook comments. A user had posted a spam link in one of the page's comments. I logged in as a moderator and deleted it, banned the user, and marked it as spam. Yet Facebook displayed the message:
Comments from USERNAME will only be visible to his friends. Undo. As the message says, it provided an undo link.
The problem is in the future when search engine bots crawl Facebook comments, and if they use the links posted in the comment which lead to spam websites, then I may get a penalty for linking to spam sites.
So how do I remove the comments entirely from Facebook, so that not even the user's friends would see it?
May be if only their friends can see it then search engines cannot crawl it. But if his friends use those links then that might add a link to the target site, which leads to my site being the referral to the span site.
So what should be done?