High-status singles met at professional events and private clubs.
If you don't know what that means, you're probably better off.
Americans who've been on it include Elijah Wood, Zach Braff, Matthew Perry, Teri Hatcher, John Cusack and the designer Alexander Wang.
'X' him (because an X and a heart are Raya's version of left and right swipes). Among them: Cara Delevingne and Samantha Ronson (ex of Lindsay Lohan and DJ sister of Mark), plus actors Bonnie Wright ().
'There's a weird number of actors and musicians,' said one male member in LA.
And then there are the directors, writers, agents, photographers, models and yogis - people the Raya founders describe as 'in the creative industries' - as well as, more recently, Arsenal players, basketball players and girls. Only one is named: PR man Mike Mc Guiness, founder of the LA-based Co-Op Agency.