Madonna, Jennifer Aniston, Demi Moore and Cindy Crawford swear by the Zone Diet, not South Beach or Atkins Diet. The celebrities say they're experiencing enhanced health after they entered the Zone. What is the Zone Diet, and why are these famous stars so happy with it?

Other well known celebrities enjoying the benefits of the Zone Diet are Sarah Jessica Parker, Sandra Bullock, Ben Stiller, Rene Zellwegger, Charlie Sheen, Bill Cosby, and Lorraine Bracco. Probably the most well known celebrity on the Zone Diet is Jennifer Aniston. She wanted to shed a few pounds while she was filming "Friends", and the Zone Diet worked for her. Since then, dieters commonly refer to it as the Jennifer Aniston Zone Diet.

"All these celebrities are under considerable stress. They must lose weight one way or another to keep the offers flowing in. Whether the name of the torture is “Zone”, “Atkins” or “South Beach”, their will and motivation is strong enough to stand it, because the results may be worth million dollars," says Enter the Zone Diet.

Searching for Jessica Biel on the Internet could prove to be extremely risky for your computer, as she has been named Americas "Most Dangerous Celebrity In Cyberspace" by Internet researchers.

Computer protection company McAfee looked at popular search engines such as Google and Yahoo! in assessing the risk by clicking on celebrity-related website links.

The company has said that cybercriminals are using A-listers’ names and images to lure Internet users who surf the Web for the latest gossip, screen savers and ringtones to "fake" Web sites that look legitimate.

Such sites could be loaded with spyware collecting information about users without their knowledge, and viruses that can infiltrate computers, with the goal of making money and committing ID theft.

They found that Biel was the riskiest US celebrity target, with one in five celebrity websites related to her being potentially harmful.

Second in line as the most dangerous star in cyberspace is Beyonce, followed closely by New England Patriots quarterback Tom Brady at the third spot.