18 January 2016
Over in the UK local police revealed that crimes linked to dating apps Tinder and Grindr, including rape, child-sex grooming and attempted murder, have increased seven-fold in only two years.
More than 400 offenses with a connection to users of the apps were reported to British police last year and campaigners warned that many more were unreported.
They said the apps' users were vulnerable to extortion and urged better awareness of the dangers of meeting strangers online.
Offenders have been jailed for trying to blackmail users of Grindr, which is a gay dating app, and a man was suspected of raping a woman he met through Tinder.
Andy Cooke, who heads the UK police's violence and public protection division, said: "The rising popularity of online dating apps and websites has contributed to an increase in the number of recorded crimes.
"Those who use online dating apps should be security conscious and not share personal data with anyone until they are sure about who they are."
Police in England and Wales received 55 reports of crimes in 2013 in which Grindr or Tinder were mentioned.
This increased to 204 in 2014 and 412 in the year to October 2015, according to the 30 UK police forces that provided the figures.
Reports of violence and sexual crimes were the most common, with 253 allegations of "violence against the person" and 152 reports of sex offenses: grooming, rape and the sexual exploitation of children.