Pinging subscription lists
Posted by Dave Winer, 5/13/06 at 3:03:05 PM.
Wherein pinging takes a leap from weblogs to OPML subscription lists.
1. Send a usual XML-RPC ping call to rpc.opml.org. It returns a struct in the same format as weblogs.com.
2. If the subscription list has changed, it's added to shareOpmlOrg.xml, which is in the same format as changes.xml.
Sample code 
local (server = "xmlrpc://rpc.opml.org/RPC2")
local (url = "http://hosting.opml.org/dave/mySubscriptions.opml")
[server].weblogUpdates.ping ("Dave", url)
