This is a "Classic Philo Cafe".
It happens once a month in a cafe in the Latin Quarter (Cafe de Flore).
It is public, free (but you must buy a drink) and it lasts 2 hours from 7 to 9 PM on a wednesday.
Topics are proposed by the attendees and then one of them is chosen on the basis of its interest as a topic for all.
People speak one at a time (there is a microphone).
The "model" is the Cafe des Phares (in french) which is every sunday at the place de la Bastille from 11 AM to 13 PM.
It's fun, ....and serious !
Welcome to the Philosophy Cafe in English !
PS :
More info about the cafe philos in general and in particular the Cafe des Phares ?
In french :
http://www.cafe-philo-des-phares.info/
More info about the Cafe de Flore ?
In english :
http://www.cafe-de-flore.com/indexa.htm