We knew that Steve Jurvetson, the DFJ partner who invested in Hotmail, had a military fetish. When he's not latching onto fads like nanotechnology, he pursues his interest in rockets, most recently building a replica of the Nazi wonder weapon , the V2, which killed thousands of Londoners during the war. A new and disturbing fact: the geeky venture capitalist is a member of Orkut's biological weapons group. Now, that's probably evidence only of the "childlike mind" which Jurvetson so cherishes, according to his profile page on the social network. But countries have been invaded on evidence, of weapons of mass destruction, more tenous than that.