Pownce was a free social networking and micro-blogging site started by Internet entrepreneurs Kevin Rose, Leah Culver, and Daniel Burka. Pownce was centered around sharing messages, files, events, and links with already-established friends. The site launched on June 27, 2007, and was opened to the public on January 22, 2008. On December 1, 2008, Pownce announced that it had been acquired by blogging company Six Apart. The service was shut down on December 15, 2008. History Its launch, on June 2… (More on Pownce)