We need to try to build one sitemap that will work for Google, Yahoo and MSN. Or at least build one program that will spit out sitemaps for each.
This might work in one of two ways that I can think of:
1. One process that creates and updates sitemaps that will work for Google and Yahoo OR 2. One process that creates different sitemaps for each Google and Yahoo (something like xml-sitemaps.com maybe?)
Caveats: 1. Must create our own - not use software 2. How to do this for hundreds of thousands of pages for each site (any roadblocks there?)