to be honest i am not exactly sure... someone explained to me that you go sit at a table where a girl is waiting for you you talk for 5 min or so and you have to rate her as in "interested" "not interested" "might be interested" kind of thing... when 5 min are over you switch to some other chick and start over at the end of the "round" some organizers compare results and if you get a perfect match then i guess you rated the girl as "interested" and she rated you the same. or something like that...