(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.

Best for Dating Around: Volume sites like are perfect for women who are interested in expanding their social circles and dating around. It's sprawling, super established, and like a massive department store, it's got a department for everyone: millennials, seniors, single parents, people looking for fun, and those looking for something more serious like marriage," Masini says.

Every day, the site sends users six matches based on compatibility, but it leaves much of the matching up to the user.

There have been complaints that Zoosk sometimes matches you with members that are not a geographic match.

And communicating with other users can be frustrating if the other user has a free membership. JDate is one of the oldest niche dating sites on the web.

"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."If you're looking for a serious relationship, my advice is spend the money for a paid membership," Masini says."It shows commitment." But if you're looking for a casual, but active dating life without any of the cost of other dating sites, give Ok Cupid a try.Did you know the top online dating sites and apps all offer 100% free trials to new users?Below our experts rank and review the the best free dating offers from all the top services.Simply click the "Visit Site" button to get free access to your site of choice, with no credit card required: Dating is a free online resource that offers valuable content and comparison services to users.