I could not figure out why updates to my Feedburner-Pingshot feed were not appearing in Google Reader in real-time. So I decided to make an easy way to test the hubs and made two Wordpress blogs that use the pubsubhubbub plugin. Anyone can make a post, which will update the feed and notify it's respective hub.
http://superfeedr.travisrss.x10.mx/ http://pubsubhubbub.travisrss.x10.mx/ I used PushBot (http://push-bot.appspot.com/) as a subscriber. This web-based xmpp client http://www.webxmpp.com/main.html gives a satisfying auditory cue when things are working. Results: [superfeedr.travisrss.x10.mx] PushBot reports successful subscription. Posts arrive real-time from PushBot. Same results with Google Reader. However, posts are NOT real-time for Netvibes [http://pubsubhubbub.travisrss.x10.mx/] PushBot reports successful subscription (for some reason). Posts do NOT arrive at all from PushBot. Posts only show in Google Reader and Netvibes after polling. No publisher diagnostics at pubsubhubbub.appspot.com. So I guess pubsubhubbub.appspot.com is not taking new subscribers? This would explain my Feedburner problems. It seems that Netvibes is either not requesting subscriptions or not accepting notifications. Give it a shot, anyway.
