Starting today you will see some subtle changes we’ve made in Sitemaps, partnering with Microsoft and Google.

First, we have updated the xsd files with the XML schemas for Sitemap or Siteindex files. The updated xsd files allow better extensibility of the Sitemaps protocol. All your existing Sitemaps will continue to validate so you don’t need to make any changes.

Second, the protocol will now allow 50,000 Sitemaps per Siteindex, up from the previous limit of 1000 Sitemaps. The file size limit will stay at 10MB.

We hope these changes will make it easier for you to use Sitemaps and submit them to Site Explorer for Yahoo! to index.

Priyank Garg
Yahoo! Search