Without using the B-word (“bubble”), The Wall Street Journal suggests that Jets.com’s stratospheric valuation smells a lot like 1999. “Online marketplace Jet.com Inc. has almost no revenue, years of likely losses in its future and a strategy that includes underpricing mighty Amazon.com Inc. on millions of items,” it writes. “Jet also has perhaps the highest valuation ever among e-commerce startups [$3 billion] before their official launch.”