"ping" various services when nodes are written

 A plug-in for Wiki::Toolkit sites, which will "ping" various external services
 when a node is written. A list of the services to ping, and where in their
 URLs to add the URL of the node, are supplied when the plugin is created.
 .
 You need to tell it how to turn a node into a URL (node_to_url), and what
 services to ping (services).