The site uses your profile to personalize the matches that it delivers to you.
It also offers a high level of search customization; the Mutual Match function, for example, allows you to find people who are looking for someone like you.
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.
All this is then incorporated into the matching-up process.