Google sitemaps have updated the service to support mobile websites. Mobile Sitemaps are intended for pages that are designed for access by phones, PDAs and other mobile devices.
You can read about how to create sitemaps for mobile, and find all details about submitting a Mobile Sitemap.
Actually the markups supported are XHTML mobile profile (WAP 2.0), WML (WAP 1.2) and cHTML (iMode). I’m interested to edit my sitemaps to add the mobile version of this blogs, just what I was looking for !
