Other sites act more as matchmaker services and agencies, where people fill out a comprehensive form about themselves which is then looked at by people who work for the service, who then in turn try to match with another member based on the two members' interests and other information.
After making a match these services and the people involved hope to have a Jewish wedding, with a Jewish wedding ring.
Some of these agency sites are even free to use, or at least browse.
They know what they're doing, and they do everything for you.
"Being a member of It's Just Lunch is like having trusted friends set you up, but even better, because they're professionals.
It’s Just Lunch is the #1 Personalized Matchmaking service in the world!
Some of these sites allow singles to become a member and submit some information about themselves, such as photos, hobbies, interests, and religious affiliation and level.
Other singles can then browse this information looking for someone that interests them, whom they can then contact through the site to set up an off line date or phone call, kind of like a Jewish personals page.