"The GeoRSS Module allows users to add geographic point data to outgoing RSS feeds. It supports two formats - Simple GeoRSS and GML - and can be administered at admin/settings/georss."
he Yahoo! Maps Ajax API enables you to overlay your data on Yahoo! Maps, allowing you to create custom map displays without programming. Simply pass GeoRSS tagged XML files to our servers and your data will be displayed on a Yahoo! Map, complete with features like overlays and annotations.