Facebook's new real-time commenting feature is now available to all users. Live commenting allows Facebook members to see new comments from their friends without having to reload the page.

"Live commenting, which we rolled out to all of our users a couple weeks ago, creates opportunities for spontaneous online conversations to take place in real time, leading to serendipitous connections that may not have ever happened otherwise," writes Facebook's Ken Deeter in a Monday blog post.

The upgrade, which brings a more dynamic feel to the social network's interface, may also encourage users to spend more time on the site-certainly good news from Facebook's perspective. Enabling live commenting wasn't easy, however. Facebook engineers had to devise a new "push-based design" to get the feature to work on such a massive scale.

More: http://www.pcworld.com/article/218921/