Twitter Inc. continued its torrid growth pace ahead of an initial public offering, as the microblogging service said revenue more than doubled in the third quarter even as losses widened. The San Francisco-based company said in a filing yesterday that its revenue was $168.6 million in the period, up from $82.3 million a year ago. Its net loss expanded to $64.6 million from $21.6 million. Twitter also said it will list its shares on the New York Stock Exchange.