Twitter shares soar after sharp revenue increase but growth still slowing

Revenues rise 97% to $479.1m in fourth quarterMonthly active users rise 20%, falling short of expectationsTwitter’s growth continued to slow in the fourth quarter, but the microblogging company’s shares soared in after-hours trading as it announced a sharp increase in revenues.The company has struggled over the last year as its share price plummeted amid continuing signs of slowing growth. Twitter announced on Thursday that monthly active users rose 20% to 288 million by the end of December