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This is a plugin that enables the use of PubSubHubBub protocol to announce when new content has been posted to the weblog.
The publisher class was written by Josh Frazer (joshfraser.com) before being modified slightly for use here. Josh also wrote the Wordpress plugin that I based this plugin on.
To install, grab the current version of the compressed plugin (wlk_phsb.txt) and paste into the plugin field in Textpattern.
As long as it’s been installed & activated, you’re ready to go.
This has been tested with 4.2.0 only. It requires CURL.