Is it really true this time? Will Microsoft really support sitemaps this time. It seems they might really mean it this time. Adding a reference to your sitemaps file will allow Miscrosoft to find your sitemaps file and they promise to use it. Currently Google and Yahoo! support sitemaps and even allow you to ping them when it’s updated. Microsoft has no ping support to help push your content out faster (at least that’s the theory), but perhaps one day Microsoft will catch on.