Comprehensive sitemaps for your WordPress.com VIP site. Joint collaboration between Metro.co.uk, WordPress.com VIP, Alley Interactive, Maker Media, 10up, and others.
The plugin ships with a bunch of wp-cli commands to simplify sitemap creation:
$ wp msm-sitemap
usage: wp msm-sitemap generate-sitemap
or: wp msm-sitemap generate-sitemap-for-year
or: wp msm-sitemap generate-sitemap-for-year-month
or: wp msm-sitemap generate-sitemap-for-year-month-day
or: wp msm-sitemap recount-indexed-posts
See 'wp help msm-sitemap <command>' for more information on a specific command.