Here is the problem. Every now and then a human spammer creates an account and posts in my forums, typically some crap about kitchens or pills or loans etc.
The spammer then also creates links from other sites to the forum post he created within my forum.
I come along and delete the spammers forum account and all his posts.
Google then throws up 404's because there is content missing that is being linked to from other sites.
I just wanted to ask if anyone knows how to best combat this and prevent the 404's.