This is an awesome plugin.... if you know google and their sitemaps they will crawl larger files then 100 links and over 100k if its a sitemap page....
What andy put together will save us tons of time from using any other sitemap out there..
check it out
http://autoforums.carjunky.com/sitemap/sitemap.html this will soon replace
http://autoforums.carjunky.com/sitemap.html (which everytime i want to update it i have to run a program, edit html, ftp files and so on... andy's plugin i just point to a url and its updated or I could set up a nightly cron
give google 5-10 days after this post and check the cache they will have the sitemap page and all sub pages cached.... its a great way to expose those pages that fall off your first page.