This is a great spot to hang out on a summer night on the rooftop patio! I try to stop in each time I visit Toronto as the service is awesome. (It should be as you need to pay to be a member).
If you hang out there regularly you're bound to run into some interesting and cool people. The view is also good from the roof, a nice way to experience T.O.
If you don't know someone with a membership, your best bet is to hang out by the door and look very friendly...hope someone takes a liking to you...