Yahoo has launched an update to their siteexplorer. Site Explorer is an interface for website operators/designers to log in to yahoo and authenticate their “ownership” over the site sot hat you can find more information over and control the ways the site is indexed. It’s fairly analogous to the Google Sitemaps feature that’s available in Google’s webmaster tools area. It’s good to see search companies letting users “peek behind the curtain” a bit, although I’m still wondering how effective these tools are.