The Blog Herald has posted an interesting piece on an unannounced change in WordPress 2.8. Basically, Wordpress no longer notifies other servers of your updated articles at the same time you post those articles.
Blogger Christian Bolstad found a new feature in WordPress 2.8, undocumented and not among the release notes in the Codex. Basically, it changes the notification behavior of WordPress, from notifying ping services like Pingomatic and others you might use automatically when publishing a post or editing a previously published post, to doing a once an hour notification using the built-in pseudo cron.
I doubt that the change to ping only once an hour in itself is that big of a deal to most bloggers. The biggest problem is that the change was undocumented. Even in the world of open source which demands transparency such an omission may not qualify as a sin, but it does qualify as the basis of for conspiracy theories and blogger rants. I wonder if this change will stick in the next version of Wordpress?