The June issue of the NAR publication "Global Perspectives" had some information regarding international social and professional networks that might provide a starting point.
For instance, you can connect with real estate professionals from around the world at:
Social networks that may also be helpful are listed below. This one is popular in several Latin American countries:
This network is popular in Columbia, Bolivia, Panama, and Venezuela, among others.
All the best,
Maggie Hawk, REALTOR
Watson Realty Corp.
Lynn911 Dallas Realtor & Consultant, Loan Officer, Credit Repair Advisor
The Michael Group - Dallas Business Journal Top Ranked Realtors