here is an uploaded drupal module that claims to add support for PSHB: http://drupal.org/node/590928#comment-2144090

Hi all, I've written a simple PubSubHubBub? subscriber client in Scala. The code is at: http://github.com/kafecho/scala-push

The first Release Candidate for Drupal 6 is a fact. And the project website is updated.

• homepage ( http://cupid-project.be/project/fastwebfeed-module )
• See documentation fastwebfeed.module-6.x-1.0-RC1 ( http://cupid-project.be/category/version/6-x-rc1 )
• Download fastwebfeed-6.x-1.0-RC1 ( http://cupid-project.be/project/fastwebfeed-module/page/downloads )
• See Demo "Testing Drupal Fastwebfeed Module" ( http://cupid-project.be/testing-drupal-fastwebfeed-module )

Is there a plugin for Blogger/Blogspot?

Is there a client push for IIS (VBSCRIPT?)

basic pusher support for drupal 6 & 7 is available from http://drupal.org/project/pusher