One particular post of mine from over a year ago, keeps getting spam comments slipping through and appearing on the post, about two a day. I mark them as spam each time. With the rest of my posts, it's only very occasionally that one slips through. Is there anything I can do? I don't want to delete that post. The particular post where it is happening is this one - http://vanessa-chapman.com/2012/12/05/love-letters-theyre-not-meant-to-be-funny-but/
The blog I need help with is vanessa-chapman.com.