More » A review of the top dating sites would be odd if it lacked POF (as it is known to its forum users), as it is considered to be the first successful free dating site model on the Internet.

The amount of people using this feature-rich site (which includes heavily-trafficked forums, compatibility questionnaires and the very popular Who's Seen Me button) is astronomical in its sheer ability to connect with users around the globe looking for friendship, love, and anything else in between.

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Unlike most other dating sites, e Harmony only allows users to contact those the system has determined to be highly compatible, and sometimes this process can take weeks - even months - to receive enough of a sample size to pay the higher-than-normal fee.

To offset the price of e Harmony (more than any other on this list) take a peek at the review for some suggestions on how to get e Harmony for free (or, pretty close).

Overall the total US visits to dating sites increased 2% YOY.

New research from the Pew Research Center shows that in the past two years, the percentage of US adults who had used a dating app tripled.

Additionally, users can contact anyone on the system - unlike the two online dating sites mentioned previously – whether or not you are matched well as an Enemy, Friend or Partner.

More » A unique compatibility matching system takes twenty-nine different personality variables and determines who you are most suitable to date.More » Out of the top online dating sites, Lavalife is the most versatile of the bunch, allowing users to join under a variety of different dating personas that can be connected or kept separate at the users' choice (Dating, Relationships and Intimate Encounters).As well, a bevy of services are available to paying users not found on the other major sites (video chat for one), and the site boasts more users in Canada than any other dating site in the world.That's a big difference, and perhaps indicates that people take out their dating woes on the apps they use.But regardless, there were stark differences between popular apps like Tinder, Ok Cupid, Bumble, and Hinge.But that doesn't mean all dating apps are created equal.