Mailbag Extra: incl: "$1 billion for a loss-making tech mob?"

-- Should I keep cash on the sidelines, especially as the market heats up? -- How should I position my portfolio after a crash? -- Little in sales, a big loss and a $1 billion valuation. What the? -- If shares slump in June, and jump in December... is that an opportunity? See omnystudio.com/listener for privacy information.