These APIs help you better understand your traffic and usage -- querying for the pages in the Yahoo! index and the sites linking into a site. They will be useful to anyone looking for a good grasp of who is linking to you and to create an effective alternative to easily-spammed trackbacks.
* Inlink Data - Shows the pages from other sites linking in to a page. * Page Data - Shows a list of all pages belonging to a domain in the Yahoo! index. * Ping - Allows you to notify Yahoo! of changes to your site. No appid required * Update Notification - Allows you to notify Yahoo! of changes to your site.