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:
User Guide Contributions Feed
User Contributed Notes
You must have an ExpressionEngine license and have attained a forum rank of "Lab Assistant" (100 posts) to contribute notes to the User Guide