Mozilla labs sudoSocial (mozillalabs.com)

You can hear the whirring sound of the Macbook fan :-)

Due to my inattention, I misread "sudoSocial" as "Suicidal". I briefly assumed it was a social network self-destruct site.

Viewing the demo that page linked to, really slowed my browser down (Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3).