If you don't have a Google Sitemap now, with this breaking news, you'll especially want to set one up:
Google, Microsoft and Yahoo have agreed to all support a unified system of submitting web pages through feeds to their crawlers. Called Sitemaps, taking its name from the precursor system that Google launched last year, all three search engines will now support the method.
More about Sitemaps is to be provided through the new Sitemaps.org site. As part of the announcement, the existing sitemaps protocol from Google gets a version upgrade to Sitemaps 0.9. However, no actual changes to the system have taken place. The new version number was simply done to reflect the protocol moving from an exclusive Google system to one that all three search engines now support. source
So what does a Sitemap look like? Check mine out at http://stanshinn.com/sitemap.xml.
You can generate them by hand, but even better is to install some software to generate it automatically.