OK, I have been told that SharePoint Blog is not very robust and that having a Blog with the ability for others to post comments anonymously means that SPAM will be more prevalent. I have been looking for ways to help address this and I will be trying the following solution.
I will create a column in the comments list that required the poster to put in today's date. If the today's date does not equal the created date then the post will be flagged. I will have another column, a calculated column that will create the flag. If this proves to be reliable then I will setup a work flow that will delete post that do not have a matching Today column with the created date.