While this kind of ecosystem is still yet to take root in the US, it is already providing cause for concern for Chinese
microblog giant Sina Weibo, which recently admitted its 400 million users are spending less time on its service due to chat apps.
Not exact matches
Another big shareholder of the
microblog service is Chinese e-commerce
giant Alibaba Group, which invested $ 586 million for an 18 % stake in Weibo one year earlier.