HONG KONG (AFP) - For Hong Kong's "part-time girlfriends", social media provides an easy way to connect with clients looking for sex, but campaigners warn that online convenience is tempting girls as young as 13 to put themselves at risk.
The label "part-time girlfriend" is a euphemism often used by young women in the city who may be studying or have jobs, but who also offer sex on the side.
By using variations of the hashtag #ptgf as shorthand, they connect with men on networks such as Instagram and then switch to direct messaging to offer services and arrange to meet.
Instagram says it has made #ptgf and #hkptgf unsearchable, but a host of new alternatives that add Chinese characters or initials to the original tag circumvent the block.
Loneliness, curiosity, family breakdown and financial pressures are key motivators for young women to try it out, according to support workers on the ground.
High-school student Kiki, a pseudonym she chose to protect her identity, started part-time sex work aged 17, saying it was easy to search for men on Instagram by using one of the #ptgf tags.
"I had an argument with my sister and was not very happy, so I just wanted to find someone to listen to me," she said. "For the first few times I felt quite good...so I kept looking for clients for company."
She admits that she was nervous about meeting strangers, but the financial incentive outweighed her doubts.
"My family is not very wealthy. I was making money for myself and saved it," she said. Kiki said she charged from HK$300 (S$51) for dinner or "touching", up to HK$1,000 for other sexual services.
After less than a year, she gave up because she had started a new relationship.
Now 19, she said she is left with a sense of regret and warned other girls to think carefully before taking the leap.
"A future boyfriend or husband might find it hard to accept," she said. "It's like you have a needle piercing your heart and it's always there."
Connecting with clients online often gives young women a false sense of security, said Ms Bowie Lam, executive director of Teen's Key, a charity that offers support to Hong Kong's sex workers under the age of 25.
She said the age of "part-time girlfriends" is getting lower and believed that social media is a factor.
"They think they have autonomy and control because they can screen a client online, talk with him, but it makes the boundary more blurred," Ms Lam said.
These young women often do not see themselves as sex workers because they are not based out of seedy rooms, or the bars and clubs of Hong Kong's traditional red light districts, she added.
Sometimes, they meet clients without offering sex at first and are taken to theme parks, dinner or even on hikes, but as more money is offered, the path usually leads to paid sex.
Some young women have their first sexual experience as a "part-time girlfriend", said Ms Lam.
Believing they have become friends with a client can lead them to drop their guard.
"Girls have been treated violently and even raped because they trusted the man wouldn't harm them," Ms Lam said.
Hong Kong police said they have taken action against websites, chat rooms and discussion forums to combat illegal prostitution activities.
The act of prostitution in itself is not illegal in Hong Kong, police say, but soliciting is.
Instagram said it acts to swiftly remove content, accounts and hashtags that violate its community guidelines.
A long-term strategy addressing taboos around talking about sex within schools and families in Hong Kong's conservative society is what is most needed to stop girls putting themselves at risk, said Ms Lam.
Teen's Key offers young sex workers a range of support services, ranging from health tests to career advice and help with financial planning.
Ms Lam said they want to help the women reconnect with their dreams and aspirations.
However, even when they are given support by the charity, some feel they cannot leave part-time sex work behind.
As the cost of living in Hong Kong soars, financial pressure is often the main factor.
Nicole, also a pseudonym, aged 24, started at the age of 18 to make money to put herself through college.
She found clients on online forums then communicated directly with them via the popular messaging app WeChat.
She now has a full-time office job, but still does after-hours sex work to pay off her college debts as her family cannot afford to help.
Nicole saw what she is doing as a practical solution but admitted it has taken an emotional toll.
She described sex work as a "dark patch" in her life and said she will feel guilty about it with any future boyfriend.
"I don't think I'm a pure person, I feel like I'm very dirty. If someone else wanted to do this, I wouldn't recommend it," she said.
But she urged people not to judge young women who have made the choices she has.
"Maybe they are in need, or have problems they can't solve," she said. "There isn't anyone who does this job because they want to."