'#2015bestnine' Instagram craze was trojan horse for dating service

Users who entered email addresses received offer to opt in to 'match-making app' Nine, launched January 2016

A viral Instagram trend from 2015, #2015bestnine, has been revealed as a trojan horse for a new dating site which launched with 130,000 inaugural members culled from the 15 million Instagrammers who took part in the trend.

Over the dying days of last year, the hashtag took off on the site, with users entering their username into 2015bestnine.com to get a mosaic of their nine most popular pictures posted on the image-sharing service.