John McAfee, the flamboyant anti-virus software industry pioneer, made a surprise appearance at a computer hackers' conference on Friday evening, where he unveiled a new website to give people a place online to vent their anger.
The one-time millionaire who fled the Central American nation of Belize in 2012 after police sought to question him about the murder of a neighbor said he set up the site for ordinary people to lodge complaints on anything from government corruption to bad consumer products.
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The site, called BrownList (www.brownlist.com/), carries the motto "It's payback time."
"This taps into anger in a positive way," he said in a brief interview before taking the stage at Def Con, the world's largest conference of computer hackers. "Instead of getting angry and shooting at somebody on the highway, or yelling at your wife, you can log onto the site."