Atom can be used as a WeblogPing API in alternative to the old school XML-RPC weblogUpdates.ping method.
How ?
Just post Atom top/feed level elements on the PingServer :
POST /AtomPing HTTP/1.1 Host: pingomatic.com Content-Type: application/x.atom+xml
<?xml version="1.0" encoding="utf-8"?> <ping version="0.3" xmlns="http://purl.org/atom/ns#"> <title>dive into mark</title> <link rel="alternate" type="text/html" href="http://diveintomark.org/"/> <link rel="alternate" type="application/x.atom+xml" href="http://diveintomark.org/xml/atom.xml"/> <link rel="alternate" type="application/rss+xml" href="http://diveintomark.org/xml/rss.xml"/> <modified>2003-12-13T18:30:02Z</modified> <tagline mode="escaped">Every time you use TypeKey, God kills a kitten.</tagline> <generator url="http://www.movabletype.org/" version="2.66">Movable Type</generator> <copyright mode="escaped">Copyright © 2004, Mark Pilgrim</copyright> <author> <name>Mark Pilgrim</name> </author> </ping>