Retired Documentation: You are using the documentation for version 1.7.3 which was retired in 2013. Go here for the latest version documentation or check here for your available upgrades to ExpressionEngine 3.
Updated Sites Module
This Updated Sites Module allows other sites to ping your site when they have created new content. You can then display a "recently updated sites" list based on the sites that send you pings.
The module will accept either a standard Weblogs.com style ping (which is most common) or an Extended Ping.
There are two areas of information for this module: