I have researched this quite a bit and I am still not sure what is happening. It might have something to do with the RSVP form. I didn't see a need for it to be encrypted because we aren't asking for sensitive info. So I just went ahead and paid a few bucks for a non-free account that includes SSL encryption. That actually solves another problem we were quickly approaching. The free account limits you to 100 submissions and so that is no longer an issue. I am hoping this solves the problem. For those interested, click here for more information on "https".
Of course, you are not reading this unless the address worked for you. But if you give/send the address to someone else, and they cannot bring up the blog, this is most likely the problem. Please email us if you have any problems. The email address will always work.
Happy trails, Bill