(Reuters) – Twitter Inc, which has been struggling to revive flagging user growth, is expected to introduce new metrics to show that its microblogging service has a wider audience who may not necessarily be logged in to their accounts, the Wall Street Journal reported. The company, which went public in November, is expected to launch four new metrics when it reports second-quarter earnings on July 29, the Journal reported, citing people familiar with the matter. Twitter currently measure its reach using traditional metrics such as monthly active users, monthly unique visitors and timeline views. Twitter has reported lackluster user and usage growth for the last couple of quarters and its stock price has nearly halved in the last six months.