I mentioned in my other post that I sent an email to plnews.org about 
their "Caml Powered" button. This is the reply I got:

A. Petras wrote:
>
> It was powered by a Python CGI script until a month ago. The site is 
> now statically generated by a custom OCaml program that pulls data 
> from a database, and generates the pages and feeds.
>
> I'll try to find some time to put up a more detailed page describing it.
>
> Thanks for your interest,
> Al