This guy met a girl at a bar and didn't get her number. But he knew that her name was Nicole, and that she attended the University of Calgary. Instead of hiring an investigator, he emailed every Nicole that had a University of Calgary email address- all 246 of them!
"Hi, this is a mass e mail to all Nicole's [sic] if you don't fit this description then ignore and if you are the one and just don't want to talk to me that's ok as well. If you name is Nicole and you're from Holland and you think Nietzsche is depressing then text me ... I'm Carlos btw I'm the guy who took you and your friend home last night."
None of the Nicoles was the one he was looking for, but his email had an effect. The Nicoles made friends with each other! They even started a Facebook group.