John McAfee, anti-virus software guru, speaks during an interview with Reuters in Guatemala CityJohn McAfee, the fancy anti-virus device industry pioneer, made a surprise appearance at a pc hackers' convention on Friday evening, where he unveiled a new web page to give folks a place online to vent their anger. The web site, referred to as BrownList (, consists of the motto "It's payback time." "This taps into anger in a positive manner," he said in a short interview sooner than taking the stage at Def Con, the world's largest convention of pc hackers. "As an alternative of simply lashing out, give us your positive solutions," he instructed an target market of tons of of hackers participating in a 3-day convention.