It'll be sometime before the online public learns how to conduct a rational debate without recourse to defamation.

大众能学到如何在线上以理性的态度处理争论而避免诉诸诽谤，仍还需要段时日。

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There are a number of lawsuits like this one, alleging online defamation and invasion of privacy, making their way through the court system.

FORBES: The frustrating quest for protection from anonymous Web surfers

There's lots more - about defamation online and controlling costs, for example.

BBC: Cheering the changes

They also seem to be claiming libel (that might work under UK laws but clearly not under US given the differences) plus defamation and online impersonation.

FORBES: Twitter And The Streisand Effect: Steve Auckland Should Grow A Pair