Twitter's growth seen hinging on luring advertisers

(Reuters) - Twitter Inc's slowing revenue and user growth has raised further doubts about its ability to entice advertisers to spend more on its platform - at least in the near term. Twitter's market value fell by a fifth, or about $5 billion, on Tuesday after its disappointing first-quarter results were released in error an hour ahead of schedule. At least 15 brokerages cut their price targets on the stock. "...Simply put, advertisers aren't willing to bid up or spend as muc