I would like to put forward a suggestion to developers who are itching to have theri name in a module:
An automatic Google Sitemap generator for CMSMS.
Its format is in xml, so should be easy to write in PHP using xml functions.
Key requirements would be, choosing of a filename, proper format according to http://www.google.com/webmasters/sitema ... Validation. They do have a schema for download.
A big must would be the auto resubmission when pages change according to http://www.google.com/webmasters/sitema ... ubmit.html.
It should allow you to choose a custom file, incase you have an index file.
This done by a http request to http://www.google.com/webmasters/sitema ... sitemap.gz.
I would be happy to make it in my spare time if someone can point me to a detailed discussion of the module API.