Thinking aloud, I was wondering if the whole thing could be set up on Google's Blogger, without the worry of going over the host's (I think I saw Apache) limits..?

A blog would be a thread and blog-comments would allow submission of messages...not sure how thread titles would move atop the list though, which is important of course, but someone with a greater IT knowledge may know..?

But I do know Blogger is free, has no limits on visits, and adds can easily be added if desired/needed...