On August 14, 2009, Sina Weibo began closed beta testing; on September 25, it officially added @, direct messages, comments, and reposting functions.
Evidence EVIDENCE
Sources 2 · Archived 0
SourceTypeReliabilityLink
中美对标
2026-09-24 12:57 · 中美对标 发布了新视频：妖妖酱：他断送了中国最后的政改机会｜从“围观改变中国”到“带货直播”
Media
●●●●●
中文维基：新浪微博
2026-10-07 00:06 · 新浪微博于2009年8月14日开始内测。9月25日，新浪微博正式添加了@功能以及私信功能，此外还提供“评论”和“转发”功能
Web Source
●●●●●
Context CONTEXT
Cause
Not recorded yet
This event
Sina Weibo begins beta testing, followed by the addition of the repost function
2009.08.14 · Verified
Effect
Not recorded yet
Coverage of this event COVERAGE