"Brainiac sites like Ok Cupid, which tend toward math-based equations to find you romance, are good choices for people who think they fall outside the norm to some degree and want a geek who might get lost in the cracks of a bigger site," Masini says.
Ok Cupid isn't the best choice for people who are looking to get into a long-term relationship; the vast majority of users are under 30 and not necessarily looking for anything serious.
Unlike the more formulaic dating sites, encourages users to spend their twenties dating as many people as possible to find what they like in a partner. Without paying for a membership, you can create a profile, receive match suggestions, search for potential matches and send "winks" to people.
Like many dating sites, Zoosk offers free browsing and message services.
However, it does not let you respond to other members until you pay for a membership, then you can wink and chat your heart out.
(Unless, you are gay or your membership is inexplicably rejected, which happens.) Regardless of it's discriminating taste, e Harmony is doing something right.
The site has shown its list of 29 "Dimensions of Compatibility" works as a matchmaking tool for thousands of couples.
More data (including some of the CEO's emails) was released on August 20, 2015.