If you have a WordPress Multi-Site set up you may already know that the widely used Google XML Sitemap Generator is not yet compatible with the latest version of WordPress. Luckily Mario Kostelac has modified the original plugin to work with WP Multi-Site.

Check it out: Google XML Sitemaps with Multisite support.

I just used it for the first time on a recent project The Campus Style and it worked great. The only hitch I noticed was that if I created sitemaps for too many sites too quickly it would throw out an error. I don't know if it was the plugin, my setup or my speedy mouse hand; but don't go too fast!