More » Originally called Engage, Christian Mingle merged with the aforementioned site in 2009 after Spark Networks bought it out.
With 5.5 million active users, it's the biggest niche and religious dating site in the world, with an even larger community base to support any Christian single's faith.
Other sites target highly specific demographics based on features like shared interests, location, religion, or relationship type.
Online dating services also differ widely in their revenue streams.
Still, it's a great site to get your feet wet in the online dating world, just to see what's out there and how the process works.
More » Zoosk hosts an estimated 11.5 million unique users a month, and it's easy to see why: the sign-up is quick and easy, there's little to no profile writing needed, and the search features prominently display photos.
That is, online dating sites use the conceptual framework of a "marketplace metaphor" to help people find potential matches, with layouts and functionalities that make it easy to quickly browse and select profiles in a manner similar to how one might browse an online store.
Under this metaphor, members of a given service can both "shop" for potential relationship partners and "sell" themselves in hopes of finding a successful match.
Such companies offer a wide variety of unmoderated matchmaking services, most of which are profile-based.
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.
Still others rely solely on paid membership subscriptions.
Opinions and usage of online dating services also differ widely.
A great diversity of online dating services currently exists.