Hi Rachel,
Ground Zero is an excellent way to meet fellow climbers and find a climbing partner. You will find good folk there. GZ usually hosts the Monday Night Bouldering League Nights in the Fall/ Winter ... although I haven't heard too much about that yet. During the 1st or last Monday of every month GZ will set 30 - 45 new problems to work on and each is assigned a point value. It is a friendly atmosphere and more of a personal competition.
Feel free to email Climb Nova Scotia or visit their website
http://www.climbnovascotia.ca for upcoming events. CNS hosts climbing events such as the up coming First Face clean and Climb, sociables, movie nights and more.
If you plan on heading to the gym or looking to get out I would post up here and let people know you are planning to climb. I usually post up here before I head out somewhere to get people interested.