Online dating services allow users to become "members" by creating a profile and uploading personal information including (but not limited to) age, gender, sexual orientation, location, and appearance.
Most services also encourage members to add photos or videos to their profile.
From Glasgow to London, dating is everywhere, from trains and buses to ATM queues.
You can now search for local singles anywhere from the comfort of your home, to high-street cafes, museums and Munros.
So, where do you start making a change for yourself?
But the fear that online dating is changing us, collectively, that it's creating unhealthy habits and preferences that aren't in our best interests, is being driven more by paranoia than it is by actual facts.
"There are a lot of theories out there about how online dating is bad for us," Michael Rosenfeld, a sociologist at Stanford who has been conducting a long-running study of online dating, told me the other day.
Members can constrain their interactions to the online space, or they can arrange a date to meet in person.
A great diversity of online dating services currently exists.