I still have the paperwork from 2009. A formal notice that my shares in " Old GM " were officially worthless. Like a lot of retail investors, part of my portfolio got wiped out when the government steppedI have covered enterprise technology as a reporter for more than 15 years. I know what tech executives say when they aren't pitching investors, what tech analysts think about products and whether there is, or will be, an appetite for them. I write here to marry my insights into tech investment strategies.An ...