Anyone who’s been publishing a blog for a while has received comments that are inappropriate for a Christian site–comments full of obscenities or bearing links to pornography–or comments that you would rather not have published on your blog.
There are always those Christians who consider it their mission to drop pre-written articles into the comment line of any post that comes close in anyway to their specialty issue. Mention ‘baptism’ in a post and you might receive an unsolicited 2 page teaching on "why infant baptism is a false practice"–posted on the comment line. You may even agree with the teaching but it really doesn’t respond in any way to the original post–what do you do?
