Sina says quarterly profit triples

BEIJING (AP) — Sina Corp., which operates a popular Chinese Internet portal, said Thursday its quarterly earnings tripled but cautioned that its fast-growing Weibo microblog service is unlikely to produce significant operating profit this year.

Shanghai-based Sina said profit for the three months ended June 30 was $33.2 million, or 49 cents per share, compared with $10 million in the same period a year ago. Revenue rose 10.5 percent over a year earlier to $131.6 million.