Is there any lawsuit between Sina Weibo and Twitter because they are identical?

No, there isn ‘t one.

Besides : what make you think they are identical ?

Both are completely different in content, UI, community, features, etc. Only thing is maybe the 140 characters length for messages, but this was originally a property of phone text message that Twitter reproduced.

This text was originally published in quora.

A question? A comment?

Please send it to me by email bonjour@clementrenaud.com or on Twitter.