Sina is an online media platform that provides its users with access to professional media. Its digital media network of Sina.com (portal), Sina.cn (mobile portal), and Weibo.com (social media), enable internet users to access professional media and user-generated content in multimedia formats from web and mobile devices and share their interests to friends and acquaintances. Sina.cn provides information and entertainment content from the SINA portal customized for mobile (WAP) users. Based on open platform architecture to host organically developed and third-party applications, Weibo.com is a form of social media featuring micro-blogging services and social networking services that allow users to connect and share information with each other.