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Twitter Targets 1 Billion Users, Challenging Facebook for Ads

Twitter Inc., the third-largest social-networking site, pledged to boost its membership more than sixfold to 1 billion, helping the microblogging service compete with Facebook Inc. in attracting advertisers.

“Twitter will get to a billion members,” Evan Williams, Twitter’s co-founder and former chief executive officer, said in San Francisco yesterday, echoing a goal set by Facebook. Williams didn’t elaborate on a timeframe.