Buddypress activity stream auto-fresh plugin?

You know, like how facebook works.... new content shows up automatically at the top of the stream without any need to refresh the page. Something like this: http://wordpress.org/extend/plugins/rs-buddypress-activity-refresh/ (but actually works and doesn't conflict with my other plugins which this little ditty did for me, unfortunately...) So, yeah, I'm in the market for a WPMUdev version of this bad boy.... unless one ALREADY exists, hmmmmm??? :slight_smile:

I can't imagine this isn't a popular request, but I also can't believe it's not butter, it tastes SO much like it!