It is rumored that Momo, the Chinese mobile social service, will file for IPO in the U.S. next month (Update: It files with the SEC on November 8). Generally referred to as a location-based social networking app for strangers, Momo however has been building features or services to help users get acquainted, aiming to become an interest-based mobile social network. Though that’s still not as fast as WeChat, which launched several months earlier the same year, Momo has been a phenomenon in mobile social networking in China. It was one of the first location-based mobile social services in China. It was one of the first location-based mobile social services in China.