How easy it is to defame someone in Wikipedia.

Who is accountable? Or should we just not worry?

Lawrence Lessig, a law professor at Stanford and an expert in the laws of cyberspace, said that contrary to popular belief, true defamation was easily pursued through the courts because almost everything on the Internet was traceable and subpoenas were not that hard to obtain. (For real anonymity, he advised, use a pay phone.)

"People will be defamed," he said. "But that's the way free speech is. Think about the gossip world. It spreads. There's no way to correct it, period. Wikipedia is not immune from that kind of maliciousness, but it is, relative to other features of life, more easily corrected."