I closed the API hole. Instructions added at the end. After switching my blog software to use BlogEngine.Net, I noticed an increase in spam attacks to my comments. The old blog required people to sign in and create an account and while I got the occasional spam in it, it was minimal. In this one, it was 2 to 3 per day and that bothered me. Thus, I started to look in to reCaptcha and seeing how to implement it.