SAN FRANCISCO - The number of Americans using Twitter dropped 7.9 percent in October from September, marking the second monthly decline for the social networking site this year, according to research firm ComScore Inc.
Twitter Inc., the number three social networking site in the United States, had 19.2 million users in October, ComScore said yesterday. The company had growth of less than 1 percent in September and declined in August. October’s number was still up more than thirteenfold from the year-earlier period.
The month-to-month decline contrasted with a 2 percent increase for users of Facebook Inc., the most popular social network. Facebook had 97.4 million US users last month, more than double the amount a year earlier, ComScore said. News Corp.’s MySpace, which ranks second among US social networking users, fell 2.5 percent from the previous month.
While Twitter’s growth among Web users is slowing, it’s attracting more mobile phone users and overseas customers, Evan Williams, the company’s chief executive, said last month.
Users of Twitter, include everyone from Oprah Winfrey to former Alaska Governor Sarah Palin.
A Twitter spokeswoman didn’t immediately respond to messages seeking comment.