A woman who chose to be identified as a prostitute talks to someone in a car at the Malmskillnadsgatan street in central Stockholm in this undated file photo. After Sweden made a law a year ago prohibiting buying sex, but not selling it, it faced ridicule among other European nations. Now, several countries are reconsidering the Swedish model, which officials say has reshaped attitudes toward the sex trade and reduced the demand for prostitutes.

Stockholm, Sweden ? Selling sex isn’t illegal in Sweden, but buying is – a radical approach to prostitution that faced ridicule when it was introduced nine years ago.

Now, while Americans are preoccupied with the downfall of New York Gov. Eliot Spitzer in a prostitution scandal, some countries are considering emulating the Swedish model, which prosecutes the client but views the prostitute as an exploited victim.

Officials say the changed approach has reduced the demand for prostitutes and reshaped attitudes toward the sex trade.

“We don’t have a problem with prostitutes. We have a problem with men who buy sex,” said Kajsa Wahlberg, of the human trafficking unit at Sweden’s national police board.

She said foreign law enforcement officials and politicians are coming to Sweden in droves to learn more about its 1999 law.

On Friday, Wahlberg was meeting with police officials from the Netherlands, where prostitution is legal but where authorities have cracked down on organized crime in Amsterdam’s red-light district.

In January, a high-level British delegation came to study the Swedish approach as Britain reviews its own prostitution laws, which prohibit soliciting and loitering for sex, but not buying sex.

Norway’s government plans to propose a Swedish-style prostitution law after Easter.

Under Sweden’s so-called “Sex Purchase Law,” paying for sex is punished by fines or up to six months in prison, plus the humiliation of public exposure. A handful of Swedish judges have been caught up in prostitution scandals, including a Supreme Court justice fined in 2005 after admitting to paying for sex with a young man.

Pimps and brothel keepers are also prosecuted, but not prostitutes, because they are viewed as victims.

While authorities judge the new system a success, critics question whether it has reduced prostitution or pushed it into more isolated and dangerous surroundings. Wahlberg concedes that accurate statistics are hard to obtain, but estimates the number of prostitutes in Sweden dropped 40 percent from 2,500 in 1998 to 1,500 in 2003.

She says police know from eavesdropping on human trafficking rings that Sweden is considered bad business.

“They are calculating profits, costs and marketing and the risk of getting caught,” Wahlberg said. “We’re trying to create a bad market for these activities.”

Sweden’s government is planning a thorough review of the effects of the law, expected to be ready next year.

Petra Ostergren, a writer who has studied prostitution for a decade, doesn’t think it has worked well.

“Sex purchases have not decreased; many young women sell sex temporarily over the Internet to fund university studies,” she said.

A 46-year-old escort who is a vocal opponent of the law said it had left prostitutes more vulnerable to violence. “If a sex worker seeks to establish contact with a client on the street, and police are waiting around the corner, she’s going to jump into the car without making a security assessment,” she said.

The mother of two, known to the public by the pseudonym Isabella Lund, said authorities never consulted sex workers on the change.

The Swedish law took effect at a time when many European countries were moving in another direction. Neighboring Denmark, for example, decriminalized prostitution in 1999 after quietly tolerating it for two decades.

Most European countries prohibit pimping and running brothels, but tolerate prostitution and penalize neither prostitutes nor clients.

Marianne Eriksson said she was ridiculed by fellow lawmakers when she first proposed the change in the European Parliament in 1997.

“To them it was the most absurd thing they ever heard. Many of them roared with laughter,” recalled Eriksson, who has since left Europe’s elected multinational legislature to chair the Stockholm branch of the opposition Left Party.

Today, she said, she feels the Swedish model has “a very strong response” in other European countries, even if many decide against adopting it.