Although I’ve only had one instance of spam responses to my blogs, Wublub mentioned a problem on his site. To ensure it doesn’t happen again, I’ve implemented a validation code on my blog response page.
I’m also at work on something that Veedub mentioned. I’m trying to implement a way to “watch” the blogs for responses. When you post a response, you can choose to watch for updates and get an e-mail when new responses are posted or the blog is updated. We’ll see what happens.