Anti-virus software guru John McAfee appeared at a computer hackers' conference on Friday evening, where he unveiled a new website to give people a place online to vent their anger. McAfee said he set up the site for ordinary people to lodge complaints on anything from government corruption to bad consumer products.

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."

BrownList offers a forum for people to file specific complaints and for users to propose solutions to problems. Suggestions are voted on by site members who decide what sorts of response might be best.

McAfee plans to make money by offering subscription services to businesses. He is already looking for more investors in the site.