A file photo shows the logo of Sina Weibo. [Photo: baidu.com]

New stats show Weibo has once-again become a profit maker for parent company Sina.

China's leading social networking platform is reporting a first-quarter profit of 7.1-million US dollars.

This is a significant turn-around from the 3.1-million US dollars Weibo incurred in losses through the first 3-months of last year.

Sina is pointing to increased advertising sales through the first quarter of this year as the main factor behind the turn-around.

Ad sales through Weibo have nearly doubled through the first-quarter.

At the same time, Sina is reporting a 45-percent increase in daily active users on Weibo through mobile devices.

Sina has been directing much of its advertising focus toward its mobile division.