Twitter Inc reported its slowest pace of user growth during the fourth quarter, dashing hopes the social media phenomenon can sustain its torrid pace of expansion and wiping out more than 10 percent of its value on Wednesday. The company posted better-than expected quarterly revenue of $243 million (148 million pounds) in its first results as a public company. Timeline views dropped sharply from 159 billion to 148 billion in the quarter, signalling that users were refreshing their Twitter accounts less often. Twitter, which held a highly-anticipated initial public offering in November at $26 a share, has divided investor opinion in the months since, as shares more than doubled to more than $66 despite an absence of news.