Here are 32 Flickr photos of participants in the Fortune Brainstorm:Tech conference late last week in Pasadena, Calif., with images of actor Ashton Kutcher (3 million Twitter followers), Twitter co-founder Biz Stone, Bill Gross, John Chen, CEO of Sybase, Mark Hurd, CEO of HP, Jeffrey Katzenberg of DreamWorks, and others. Related articles by Zemanta Ashton […]