Sounds good!

There are two WordPress plug-ins that support PubSubHubbub as well (hopefully just as easy):
http://wordpress.org/extend/plugins/pubsubhubbub/
http://wordpress.org/extend/plugins/wp-pubsubhubb

Links to other plug-ins and extensions to other CMSes (like MovableType) are here:
http://code.google.com/p/pubsubhubbub/wiki/Publis