WordPress.com has launched their own commenting platform for the users of self-hosted WordPress blogs.

This feature is now available through Jetpack plugin WordPress.

Jetpack Comments allows the visitor on your website to login with any of the supported social networking accounts to leave a comment.

Facebook, Twitter and WordPress.com accounts are of course supported.

This is a good alternative to third party apps like Disqus, LiveFyre or IntenseDebate if you want to improve the commenting platform on your blog.

Other changes:

Multiple fixes for Sharing, such as updates for language locales on the Facebook Like button and making the More button more reliable.
Updates to the YouTube and Audio shortcodes for better URL escaping.
Update the YouTube shortcode to respect the embed settings in Settings → Media when appropriate.
Code clean up for After the Deadline.