British FHM readers recently chose their 100 sexiest women in the world. Kelly Brook came out tops, followed by Cheryl Tweedy and Angelina Jolie.

But what do these women have in common with Aphrodite, the Greek goddess of love, beauty and sexual rapture?

Men are stimulated by visuals, so looks are obviously important when it comes to attraction. However, different men like different things.

Peter Andre would probably not be attracted to someone like Gwyneth Paltrow, in the same way that it's hard to imagine Gwynnie's husband Chris Martin getting it on with Jordan.

However, a recent online survey found that the majority of people who chat online rate a person's smile as their most attractive feature.

Nathan, a 22-year-old law student, confirmed this, saying: "A girl that smiles in the photo of her online profile tells me that she's relaxed with who she is and that she's fun to be around."

When chatting online brains are as important as beauty, men say.

"I don't care how beautiful a girl is if she has nothing interesting to say, I'm simply not attracted to her," says Darren, 23.

Lisa, a secretary who met her partner Ben through chatting online says being sexy is simple: be yourself.

"I had different characters when I was chatting to different people. When chatting to a writer I would try to seem more intellectual and when chatting to a rugby player I was trying to sound like a cheerleader," she says.

When none of these worked out for her, Lisa decided to be the person she knew best how to be: herself.

Ben says he liked Lisa's no-nonsense profile and started exchanging emails and chatting online with her.

"I was thrilled when we eventually met and I found out that her wit is just as sharp in person as online and that she was even sexier than I thought she would be," he says.